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	<id>https://theportalwiki.com/w/api.php?action=feedcontributions&amp;feedformat=atom&amp;user=Random</id>
	<title>Portal Wiki - User contributions [en]</title>
	<link rel="self" type="application/atom+xml" href="https://theportalwiki.com/w/api.php?action=feedcontributions&amp;feedformat=atom&amp;user=Random"/>
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	<updated>2026-04-19T13:43:36Z</updated>
	<subtitle>User contributions</subtitle>
	<generator>MediaWiki 1.44.0</generator>
	<entry>
		<id>https://theportalwiki.com/w/index.php?title=User_talk:Random&amp;diff=35131</id>
		<title>User talk:Random</title>
		<link rel="alternate" type="text/html" href="https://theportalwiki.com/w/index.php?title=User_talk:Random&amp;diff=35131"/>
		<updated>2011-08-27T21:58:19Z</updated>

		<summary type="html">&lt;p&gt;Random: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;== Oh hai ==&lt;br /&gt;
&lt;br /&gt;
Thanks for taking the time to register and fix that little mistake, and welcome~ :3 — [[User:WindPower|Wind]] 20:14, 27 August 2011 (UTC)&lt;br /&gt;
&lt;br /&gt;
== Panels ==&lt;br /&gt;
&lt;br /&gt;
Added a picture for panels. [[User:Random|Random]] 21:58, 27 August 2011 (UTC)&lt;/div&gt;</summary>
		<author><name>Random</name></author>
	</entry>
	<entry>
		<id>https://theportalwiki.com/w/index.php?title=Panels&amp;diff=35130</id>
		<title>Panels</title>
		<link rel="alternate" type="text/html" href="https://theportalwiki.com/w/index.php?title=Panels&amp;diff=35130"/>
		<updated>2011-08-27T21:56:18Z</updated>

		<summary type="html">&lt;p&gt;Random: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{Quotation|&#039;&#039;&#039;GLaDOS&#039;&#039;&#039;|That&#039;s right. Drink it in. You could eat off those wall panels.|sound=GLaDOS sp_hole_in_the_sky_entry02.wav}}&lt;br /&gt;
&lt;br /&gt;
[[File:Panel.png|right|200px|thumb|A panel found in &#039;&#039;Portal 2&#039;&#039;.]]&lt;br /&gt;
[[File:Portal 2 Chapter 4 Test Chamber 21 Wheatley.png|right|200px|thumb|{{Spoiler|&#039;&#039;&#039;&#039;&#039;Wheatley opening panels.&#039;&#039;&#039;&#039;&#039;}}]]&lt;br /&gt;
&#039;&#039;&#039;Panels&#039;&#039;&#039; are the fundamental building blocks of [[Aperture Science]] Test Chambers. Panels can be placed anywhere, and can be used to form walls, floors, ceilings or even [[Crusher]]s. Because the orientation, angle and height of Panels can be adjusted as needed, they can be reconfigured in order to create a near-infinite number of variations. Due to their range of uses and large number of possible permutations, Panels are an ideal choice for constructing test chambers, and allow those in charge to create new chambers with new obstacles and hazards on-the-fly. &lt;br /&gt;
{{clr}}&lt;br /&gt;
&lt;br /&gt;
== Function ==&lt;br /&gt;
Panels are capable of aiding or impeding the player&#039;s completion of the task at hand depending upon their placement. Non-static Panels in test chambers are usually activated through the use of [[Button]]s, which will either add or remove panels to or from the player&#039;s path. For example, a series of Panels can be used to create a new walkway or staircase, provide a surface upon which a [[Portal]] can be placed, or to provide a barrier to prevent the loss of critical items such as [[Weighted Storage Cube]]s. Panels can be used effectively in virtually every test, making them very useful for trapping a Test Subject or shielding the player from a hazard. This mechanic becomes much more crucial during [[Co-op]], as Panels are often present in order to block one partner from crashing into a hazard, or are used to prevent the duo from easily accessing a certain area.&lt;br /&gt;
      &lt;br /&gt;
&lt;br /&gt;
{{MechanicsNav}}&lt;br /&gt;
[[Category:Mechanics]]&lt;/div&gt;</summary>
		<author><name>Random</name></author>
	</entry>
	<entry>
		<id>https://theportalwiki.com/w/index.php?title=Panels&amp;diff=35129</id>
		<title>Panels</title>
		<link rel="alternate" type="text/html" href="https://theportalwiki.com/w/index.php?title=Panels&amp;diff=35129"/>
		<updated>2011-08-27T21:54:28Z</updated>

		<summary type="html">&lt;p&gt;Random: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{Quotation|&#039;&#039;&#039;GLaDOS&#039;&#039;&#039;|That&#039;s right. Drink it in. You could eat off those wall panels.|sound=GLaDOS sp_hole_in_the_sky_entry02.wav}}&lt;br /&gt;
&lt;br /&gt;
[[File:Panel.png|right|200px|thumb|A panel found in &#039;&#039;Portal 2&#039;&#039;.]]&lt;br /&gt;
[[File:Portal 2 Chapter 4 Test Chamber 21 Wheatley.png|right|200px|thumb|{{Spoiler|Wheatley opening panels.}}]]&lt;br /&gt;
&#039;&#039;&#039;Panels&#039;&#039;&#039; are the fundamental building blocks of [[Aperture Science]] Test Chambers. Panels can be placed anywhere, and can be used to form walls, floors, ceilings or even [[Crusher]]s. Because the orientation, angle and height of Panels can be adjusted as needed, they can be reconfigured in order to create a near-infinite number of variations. Due to their range of uses and large number of possible permutations, Panels are an ideal choice for constructing test chambers, and allow those in charge to create new chambers with new obstacles and hazards on-the-fly. &lt;br /&gt;
{{clr}}&lt;br /&gt;
&lt;br /&gt;
== Function ==&lt;br /&gt;
Panels are capable of aiding or impeding the player&#039;s completion of the task at hand depending upon their placement. Non-static Panels in test chambers are usually activated through the use of [[Button]]s, which will either add or remove panels to or from the player&#039;s path. For example, a series of Panels can be used to create a new walkway or staircase, provide a surface upon which a [[Portal]] can be placed, or to provide a barrier to prevent the loss of critical items such as [[Weighted Storage Cube]]s. Panels can be used effectively in virtually every test, making them very useful for trapping a Test Subject or shielding the player from a hazard. This mechanic becomes much more crucial during [[Co-op]], as Panels are often present in order to block one partner from crashing into a hazard, or are used to prevent the duo from easily accessing a certain area.&lt;br /&gt;
      &lt;br /&gt;
&lt;br /&gt;
{{MechanicsNav}}&lt;br /&gt;
[[Category:Mechanics]]&lt;/div&gt;</summary>
		<author><name>Random</name></author>
	</entry>
	<entry>
		<id>https://theportalwiki.com/w/index.php?title=Panels&amp;diff=35128</id>
		<title>Panels</title>
		<link rel="alternate" type="text/html" href="https://theportalwiki.com/w/index.php?title=Panels&amp;diff=35128"/>
		<updated>2011-08-27T21:48:55Z</updated>

		<summary type="html">&lt;p&gt;Random: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{Quotation|&#039;&#039;&#039;GLaDOS&#039;&#039;&#039;|That&#039;s right. Drink it in. You could eat off those wall panels.|sound=GLaDOS sp_hole_in_the_sky_entry02.wav}}&lt;br /&gt;
&lt;br /&gt;
[[File:Panel.png|right|200px|thumb|A panel found in &#039;&#039;Portal 2&#039;&#039;.]]&lt;br /&gt;
[[File:Portal 2 Chapter 4 Test Chamber 21 Wheatley.png|right|200px|thumb|Wheatley opening panels.]]&lt;br /&gt;
&#039;&#039;&#039;Panels&#039;&#039;&#039; are the fundamental building blocks of [[Aperture Science]] Test Chambers. Panels can be placed anywhere, and can be used to form walls, floors, ceilings or even [[Crusher]]s. Because the orientation, angle and height of Panels can be adjusted as needed, they can be reconfigured in order to create a near-infinite number of variations. Due to their range of uses and large number of possible permutations, Panels are an ideal choice for constructing test chambers, and allow those in charge to create new chambers with new obstacles and hazards on-the-fly. &lt;br /&gt;
{{clr}}&lt;br /&gt;
&lt;br /&gt;
== Function ==&lt;br /&gt;
Panels are capable of aiding or impeding the player&#039;s completion of the task at hand depending upon their placement. Non-static Panels in test chambers are usually activated through the use of [[Button]]s, which will either add or remove panels to or from the player&#039;s path. For example, a series of Panels can be used to create a new walkway or staircase, provide a surface upon which a [[Portal]] can be placed, or to provide a barrier to prevent the loss of critical items such as [[Weighted Storage Cube]]s. Panels can be used effectively in virtually every test, making them very useful for trapping a Test Subject or shielding the player from a hazard. This mechanic becomes much more crucial during [[Co-op]], as Panels are often present in order to block one partner from crashing into a hazard, or are used to prevent the duo from easily accessing a certain area.&lt;br /&gt;
      &lt;br /&gt;
&lt;br /&gt;
{{MechanicsNav}}&lt;br /&gt;
[[Category:Mechanics]]&lt;/div&gt;</summary>
		<author><name>Random</name></author>
	</entry>
	<entry>
		<id>https://theportalwiki.com/w/index.php?title=Portal_2_Chapter_4_Test_Chamber_21_(Escape)&amp;diff=35127</id>
		<title>Portal 2 Chapter 4 Test Chamber 21 (Escape)</title>
		<link rel="alternate" type="text/html" href="https://theportalwiki.com/w/index.php?title=Portal_2_Chapter_4_Test_Chamber_21_(Escape)&amp;diff=35127"/>
		<updated>2011-08-27T21:40:12Z</updated>

		<summary type="html">&lt;p&gt;Random: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{stub}}&lt;br /&gt;
&lt;br /&gt;
{{Test Chamber Infobox&lt;br /&gt;
  | title      = Chapter 4 - Test Chamber 21&lt;br /&gt;
  | map        = sp_a2_bts1.bsp&lt;br /&gt;
  | number     = 21&lt;br /&gt;
  | total      = 22&lt;br /&gt;
  | screenshot = Portal 2 Chapter 4 Test Chamber 21.png&lt;br /&gt;
  | icon1      = light bridge on&lt;br /&gt;
  | icon2      = cube dispenser on&lt;br /&gt;
  | icon3      = cube button on&lt;br /&gt;
  | icon4      = cube hazard on&lt;br /&gt;
  | icon5      = laser sensor&lt;br /&gt;
  | icon6      = laser redirection&lt;br /&gt;
  | icon7      = turret hazard&lt;br /&gt;
  | icon8      = laser hazard&lt;br /&gt;
  | icon9      = water hazard on&lt;br /&gt;
  | icon10     = dirty water&lt;br /&gt;
  | previous   = Portal 2 Chapter 4 Test Chamber 20&lt;br /&gt;
  | next       = Portal 2 Chapter 5 Turret Manufacturing&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
This is the thirty-first level of the game, and the final part of Chapter 4. This level is set within a Test Chamber, and later the maintenance areas of the [[Aperture Science]] Facility. This level advances the central plot, and does not contain any significant [[Portals|Portal]]-related challenges.&lt;br /&gt;
&lt;br /&gt;
== Hazards ==&lt;br /&gt;
*[[Goo]]&lt;br /&gt;
*[[Turrets]]&lt;br /&gt;
&lt;br /&gt;
== Walkthrough ==&lt;br /&gt;
*Place a portal on the wall where the [[Hard Light Bridge]] ends and the other one on the left side of the exit.&lt;br /&gt;
*Go through the portal and push the [[Switch]].&lt;br /&gt;
*Continue to walk to the cube.&lt;br /&gt;
*Put the cube on the button.&lt;br /&gt;
{{Spoiler|block=yes|&lt;br /&gt;
*Ignore the last non-spoiler sentance above.&lt;br /&gt;
*Wait for [[Wheatley]] to open the wall and run to the Maintenance area.&lt;br /&gt;
*Run to the left and continue forwards.&lt;br /&gt;
*Turn right on just before the catwalk ends.&lt;br /&gt;
*Turn left and jump down. Continue by to the right up the stairs.&lt;br /&gt;
*Run forward as much as you can. Turn left and continue running.&lt;br /&gt;
*Jump down on the left side.&lt;br /&gt;
*Use the Bridge and run away from the Chamber until the Bridge disappears.&lt;br /&gt;
*Turn to the opposite direction and continue running.&lt;br /&gt;
*Jump from the catwalk to the area between chambers and run forward until you get to the wall.&lt;br /&gt;
*Pick up the turret and knock over the turret behind it.&lt;br /&gt;
*Turn left and go behind the tube and knock over the third turret.&lt;br /&gt;
*Let go off the turret (make sure it gets knocked over).&lt;br /&gt;
*Open a portal on the wall near the third turret. Shoot the other portal behind the panels where the third turret is. Go through the portal.&lt;br /&gt;
*Run to the right and follow Wheatley until a turret is revealed on the left.&lt;br /&gt;
*Get rid of the turret by using a portal and continue following Wheatley. Enter the elevator at the end of the catwalk.&lt;br /&gt;
*Wait for the elevator to stop and go through the door.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
== Video walkthrough ==&lt;br /&gt;
{{walkthrough | parts = 2}}&lt;br /&gt;
&lt;br /&gt;
== Related achievements ==&lt;br /&gt;
{{Show achievement|Portal 2|SaBOTour|width=50%}}&lt;br /&gt;
{{Show achievement|Portal 2|Good Listener|width=50%}}&lt;br /&gt;
&lt;br /&gt;
== Music ==&lt;br /&gt;
{{Track|An Accent Beyond}}&lt;br /&gt;
&lt;br /&gt;
== Gallery ==&lt;br /&gt;
{{Gallery&lt;br /&gt;
|width=192&lt;br /&gt;
|height=108&lt;br /&gt;
|lines=2&lt;br /&gt;
|File:Portal 2 Chapter 4 Test Chamber 21 Wheatley.png|alt1=Wheatley interrupting the Test Chamber|Wheatley interrupting the Test Chamber.&lt;br /&gt;
|File:Portal 2 Chapter 4 Test Chamber 21 escape.png|alt2=The escape begins|The escape begins.&lt;br /&gt;
|File:Portal 2 Chapter 4 Test Chamber 21 temptation.png|alt3=GLaDOS attempts to tempt the player back to testing|GLaDOS attempts to tempt the player back to testing.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
{{TestChambersNav}}&lt;/div&gt;</summary>
		<author><name>Random</name></author>
	</entry>
	<entry>
		<id>https://theportalwiki.com/w/index.php?title=Portal_2_Chapter_4_Test_Chamber_21_(Escape)&amp;diff=35126</id>
		<title>Portal 2 Chapter 4 Test Chamber 21 (Escape)</title>
		<link rel="alternate" type="text/html" href="https://theportalwiki.com/w/index.php?title=Portal_2_Chapter_4_Test_Chamber_21_(Escape)&amp;diff=35126"/>
		<updated>2011-08-27T21:37:52Z</updated>

		<summary type="html">&lt;p&gt;Random: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{stub}}&lt;br /&gt;
&lt;br /&gt;
{{Test Chamber Infobox&lt;br /&gt;
  | title      = Chapter 4 - Test Chamber 21&lt;br /&gt;
  | map        = sp_a2_bts1.bsp&lt;br /&gt;
  | number     = 21&lt;br /&gt;
  | total      = 22&lt;br /&gt;
  | screenshot = Portal 2 Chapter 4 Test Chamber 21.png&lt;br /&gt;
  | icon1      = light bridge on&lt;br /&gt;
  | icon2      = cube dispenser on&lt;br /&gt;
  | icon3      = cube button on&lt;br /&gt;
  | icon4      = cube hazard on&lt;br /&gt;
  | icon5      = laser sensor&lt;br /&gt;
  | icon6      = laser redirection&lt;br /&gt;
  | icon7      = turret hazard&lt;br /&gt;
  | icon8      = laser hazard&lt;br /&gt;
  | icon9      = water hazard on&lt;br /&gt;
  | icon10     = dirty water&lt;br /&gt;
  | previous   = Portal 2 Chapter 4 Test Chamber 20&lt;br /&gt;
  | next       = Portal 2 Chapter 5 Turret Manufacturing&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
This is the thirty-first level of the game, and the final part of Chapter 4. This level is set within a Test Chamber, and later the maintenance areas of the [[Aperture Science]] Facility. This level advances the central plot, and does not contain any significant [[Portals|Portal]]-related challenges.&lt;br /&gt;
&lt;br /&gt;
== Hazards ==&lt;br /&gt;
*[[Goo]]&lt;br /&gt;
*[[Turrets]]&lt;br /&gt;
&lt;br /&gt;
== Walkthrough ==&lt;br /&gt;
*Place a portal on the wall where the [[Hard Light Bridge]] ends and the other one on the left side of the exit.&lt;br /&gt;
*Go through the portal and push the [[Switch]].&lt;br /&gt;
*Continue to walk to the cube.&lt;br /&gt;
*Put the cube on the button.&lt;br /&gt;
{{Spoiler|block=yes|&lt;br /&gt;
*Ignore the last non-spoiler sentance above&lt;br /&gt;
*Wait for [[Wheatley]] to open the wall and run to the Maintenance area.&lt;br /&gt;
*Run to the left and continue forwards.&lt;br /&gt;
*Turn right on just before the catwalk ends.&lt;br /&gt;
*Turn left and jump down. Continue by to the right up the stairs.&lt;br /&gt;
*Run forward as much as you can. Turn left and continue running.&lt;br /&gt;
*Jump down on the left side.&lt;br /&gt;
*Use the Bridge and run away from the Chamber until the Bridge disappears.&lt;br /&gt;
*Turn to the opposite direction and continue running.&lt;br /&gt;
*Jump from the catwalk to the area between chambers and run forward until you get to the wall.&lt;br /&gt;
*Pick up the turret and knock over the turret behind it.&lt;br /&gt;
*Turn left and go behind the tube and knock over the third turret.&lt;br /&gt;
*Let go off the turret (make sure it gets knocked over).&lt;br /&gt;
*Open a portal on the wall near the third turret. Shoot the other portal behind the panels where the third turret is. Go through the portal.&lt;br /&gt;
*Run to the right and follow Wheatley until a turret is revealed on the left.&lt;br /&gt;
*Get rid of the turret by using a portal and continue following Wheatley. Enter the elevator at the end of the catwalk.&lt;br /&gt;
*Wait for the elevator to stop and go through the door.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
== Video walkthrough ==&lt;br /&gt;
{{walkthrough | parts = 2}}&lt;br /&gt;
&lt;br /&gt;
== Related achievements ==&lt;br /&gt;
{{Show achievement|Portal 2|SaBOTour|width=50%}}&lt;br /&gt;
{{Show achievement|Portal 2|Good Listener|width=50%}}&lt;br /&gt;
&lt;br /&gt;
== Music ==&lt;br /&gt;
{{Track|An Accent Beyond}}&lt;br /&gt;
&lt;br /&gt;
== Gallery ==&lt;br /&gt;
{{Gallery&lt;br /&gt;
|width=192&lt;br /&gt;
|height=108&lt;br /&gt;
|lines=2&lt;br /&gt;
|File:Portal 2 Chapter 4 Test Chamber 21 Wheatley.png|alt1=Wheatley interrupting the Test Chamber|Wheatley interrupting the Test Chamber.&lt;br /&gt;
|File:Portal 2 Chapter 4 Test Chamber 21 escape.png|alt2=The escape begins|The escape begins.&lt;br /&gt;
|File:Portal 2 Chapter 4 Test Chamber 21 temptation.png|alt3=GLaDOS attempts to tempt the player back to testing|GLaDOS attempts to tempt the player back to testing.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
{{TestChambersNav}}&lt;/div&gt;</summary>
		<author><name>Random</name></author>
	</entry>
	<entry>
		<id>https://theportalwiki.com/w/index.php?title=Cooperative_Testing_Initiative&amp;diff=35125</id>
		<title>Cooperative Testing Initiative</title>
		<link rel="alternate" type="text/html" href="https://theportalwiki.com/w/index.php?title=Cooperative_Testing_Initiative&amp;diff=35125"/>
		<updated>2011-08-27T20:36:44Z</updated>

		<summary type="html">&lt;p&gt;Random: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;[[File:The bots.png|right|320px|thumb|Atlas and P-body, the Co-op bots, in &#039;&#039;[[Portal 2]]&#039;&#039;]]&lt;br /&gt;
{{Quotation|&#039;&#039;&#039;GLaDOS&#039;&#039;&#039;|These next tests require cooperation. Consequently, they have never been solved by a human. That&#039;s where you come in. You don&#039;t know pride; you don&#039;t know fear. You don&#039;t know anything. You&#039;ll be perfect.}}&lt;br /&gt;
&#039;&#039;&#039;The Cooperative Testing Initiative&#039;&#039;&#039;, or &#039;&#039;&#039;Co-op&#039;&#039;&#039; for short, is the separate game mode where two players can join up and take part in test chambers built specifically for cooperative play. The players take the form of either [[Atlas]], the short and blue bot, or [[P-body]], the tall and orange bot. Each bot comes equipped with their own Handheld Portal Device with separate portal colors. The portals are capable of maintaining the flow of things, even if it enters a partner&#039;s portal, which is essential during some test chambers.&lt;br /&gt;
&lt;br /&gt;
There are five test courses, each with several testing chambers within, which will test both players&#039; ability to solve the different puzzles as they progress. Each chamber becomes much harder than the last, with the final test taking place outside of the official Aperture testing facilities. In these tests, the players are then put to the test, so to speak, and must use every bit of knowledge earned about the previous tests in the final one. The last chambers of each course, excluding the fifth, the players are told to go out and locate a certain disk for the DVD player found at the end of the course. Once found and inserted within the device, the players are given a few lines from [[GLaDOS]] before exploding violently. This is the only means of getting out of the test chamber. Upon completion, players are then returned to the [[Hub]].&lt;br /&gt;
&lt;br /&gt;
During the testing, GLaDOS will periodically chime in and say a few choice words, either to bemoan the players&#039; progress or point out their tiny flaws. She even goes beyond to try and break their partnership by pointing fingers at one or the other. If the player stands within range of one of GLaDOS&#039; monitoring cameras and perform a gesture, it will elicit a response from GLaDOS, depending on the gesture performed. Players do not have to fear death while testing, as it&#039;s commonplace in the machine world. If a player dies, the other player will be given an indication that the other has died and where they died. The dead player will then respawn moments later from the chute the Reassembly Machine sends them through, ready for a second try. The players have an infinite amount of lives, and GLaDOS will comment on every death that occurs with dry humor or irritability. As players progress, they will cross checkpoints that lead into the next part of the test chamber. The checkpoints will allow players who die to respawn at the checkpoint for shorter travel time to the next testing chamber.&lt;br /&gt;
&lt;br /&gt;
==Courses==&lt;br /&gt;
====Course One: Team Building====&lt;br /&gt;
{{spoiler text|This is one of the first courses available to the player upon entering the Hub, the others remaining locked until the other courses are completed. In this course, the players are given basic tests that emphasize the use of teamwork through portals and &#039;&#039;pinging&#039;&#039;, which is a function that allows players to communicate even without text or even through voice. Pings come in a variety of forms, from a simple &amp;quot;Look&amp;quot; ping, to a &amp;quot;Timer&amp;quot; ping that can be used to coordinate timed events effectively.}}&lt;br /&gt;
&lt;br /&gt;
====Course Two: Mass and Velocity====&lt;br /&gt;
{{spoiler text|After completing Course One, this course will unlock for players to continue testing. This chamber utilizes the effects portals have when an object has both mass and velocity as it enters the portal, meaning the players must utilize both in order to pass this course.}}&lt;br /&gt;
&lt;br /&gt;
====Course Three: Hard-Light Surfaces====&lt;br /&gt;
{{spoiler text|This course opens up upon completion of Course Two. In this course, the players must make use of the Light Bridges to both navigate chambers and act as a wall for other chambers as a defense mechanism or a creative way of stopping something from hurtling into a water hazard.}}&lt;br /&gt;
&lt;br /&gt;
====Course Four: Excursion Funnels====&lt;br /&gt;
{{spoiler text|This course unlocks upon completion of Course Three. During this course, the player will have to make use of both Light Bridges and Excursion Funnels in order to complete these chambers. It will employ elements from the previous courses as well, making it much more difficult as the players progress.}}&lt;br /&gt;
&lt;br /&gt;
====Course Five: Mobility Gels====&lt;br /&gt;
{{spoiler text|This is the final course that unlocks after the completion of Course Four. Upon entering, GLaDOS will chime in the explain the purpose of the testing and what their true purpose is. The players are then dropped into the defunct Aperture testing spheres encountered during single player, and must make use of all elements from the previous chambers along with the Gels that are found in the course. The final course is very difficult, requiring both players to act as a true team. The last chamber is halted by a large vault door, which holds the frozen humans inside. Both players must perform any gesture to ultimately unlock the door.}}&lt;br /&gt;
&lt;br /&gt;
====Course Six: Advanced Chambers====&lt;br /&gt;
{{spoiler text|There is evidence within the game&#039;s localisation files that there was a sixth course of Co-op chambers during Portal 2&#039;s development:  Advanced Chambers.  Valve has said that in an upcoming DLC, advanced [[Test Chambers]] will be introduced to both Single player and Co-op play of Portal 2.  There is no known information why these chambers were not available at the launch of Portal 2.}}&lt;br /&gt;
&lt;br /&gt;
== Gallery ==&lt;br /&gt;
{{Gallery&lt;br /&gt;
|lines=1&lt;br /&gt;
|height=150&lt;br /&gt;
|width=150&lt;br /&gt;
|File:Atlas.png|alt1=Atlas|[[Atlas]]&lt;br /&gt;
|File:P-body.png|alt2=P-body|[[P-body]]&lt;br /&gt;
|File:Atlas first person.png|alt3=Atlas first-person view.|Atlas first-person view.&lt;br /&gt;
|File:Atlas_both_portal.png|alt4=Both of Atlas&#039; portals|Both of Atlas&#039; portals&lt;br /&gt;
|File:P-body first person.png|alt5=P-body first-person view.|P-body first-person view.&lt;br /&gt;
|File:P-body_both_portal.png|alt6=Both of P-body&#039;s portals|Both of P-body&#039;s portals&lt;br /&gt;
|File:Bots_Screenshot.png|alt7=Atlas in Roll Cage|Atlas in the [[Roll Cage]]&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
== Related Achievements ==&lt;br /&gt;
=== Portal 2 ===&lt;br /&gt;
{{Achievement table&lt;br /&gt;
| 1 = {{Show achievement|Portal 2|You Saved Science}}&lt;br /&gt;
      {{Show achievement|Portal 2|Team Building}}&lt;br /&gt;
      {{Show achievement|Portal 2|Triple Crown}}&lt;br /&gt;
      {{Show achievement|Portal 2|Still Alive}}&lt;br /&gt;
      {{Show achievement|Portal 2|Rock Portal Scissors}}&lt;br /&gt;
      {{Show achievement|Portal 2|Professor Portal}}&lt;br /&gt;
      {{Show achievement|Portal 2|Portal Conservation Society}}&lt;br /&gt;
      {{Show achievement|Portal 2|Party of Three}}&lt;br /&gt;
      {{Show achievement|Portal 2|Obstacle Building}}&lt;br /&gt;
      {{Show achievement|Portal 2|Narbacular Drop}}&lt;br /&gt;
      {{Show achievement|Portal 2|Iron Grip}}&lt;br /&gt;
| 2 = {{Show achievement|Portal 2|High Five}}&lt;br /&gt;
      {{Show achievement|Portal 2|Gesticul-8}}&lt;br /&gt;
      {{Show achievement|Portal 2|Friends List With Benefits}}&lt;br /&gt;
      {{Show achievement|Portal 2|Four Ring Circus}}&lt;br /&gt;
      {{Show achievement|Portal 2|Empty Gesture}}&lt;br /&gt;
      {{Show achievement|Portal 2|Confidence Building}}&lt;br /&gt;
      {{Show achievement|Portal 2|Can&#039;t Touch This}}&lt;br /&gt;
      {{Show achievement|Portal 2|Bridge Building}}&lt;br /&gt;
      {{Show achievement|Portal 2|Asking for Trouble}}&lt;br /&gt;
      {{Show achievement|Portal 2|Air Show}}&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
{{TestChambersNav}}&lt;/div&gt;</summary>
		<author><name>Random</name></author>
	</entry>
	<entry>
		<id>https://theportalwiki.com/w/index.php?title=Portal_Test_Chamber_16&amp;diff=35123</id>
		<title>Portal Test Chamber 16</title>
		<link rel="alternate" type="text/html" href="https://theportalwiki.com/w/index.php?title=Portal_Test_Chamber_16&amp;diff=35123"/>
		<updated>2011-08-27T20:12:10Z</updated>

		<summary type="html">&lt;p&gt;Random: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{stub}}&lt;br /&gt;
&lt;br /&gt;
{{Chamber infobox&lt;br /&gt;
  | title      = Test Chamber 16&lt;br /&gt;
  | map        = testchmb_a_16.bsp&lt;br /&gt;
  | number     = 16&lt;br /&gt;
  | total      = 19&lt;br /&gt;
  | screenshot = Portal Test Chamber 16.png&lt;br /&gt;
  | icon1      = cube dispenser on&lt;br /&gt;
  | icon2      = cube hazard on&lt;br /&gt;
  | icon3      = pellet hazard&lt;br /&gt;
  | icon4      = pellet catcher&lt;br /&gt;
  | icon5      = water hazard&lt;br /&gt;
  | icon6      = fling enter&lt;br /&gt;
  | icon7      = fling exit&lt;br /&gt;
  | icon8      = turret hazard on&lt;br /&gt;
  | icon9      = dirty water&lt;br /&gt;
  | icon10     = cake&lt;br /&gt;
  | previous   = Portal Test Chamber 15&lt;br /&gt;
  | next       = Portal Test Chamber 17&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
This chamber is the fifteenth level of the game.&lt;br /&gt;
&lt;br /&gt;
== Hazards ==&lt;br /&gt;
* Cube Hazard&lt;br /&gt;
* Turrets&lt;br /&gt;
&lt;br /&gt;
== Walkthrough ==&lt;br /&gt;
{{Spoiler|block=yes|&lt;br /&gt;
- in progress -&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
=== Alternative Solutions ===&lt;br /&gt;
{{Spoiler|block=yes|&lt;br /&gt;
* Most turrets can be walked towards and pushed over with the help of a cube, instead of tactically portalling them.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
== Video walkthrough ==&lt;br /&gt;
{{chamber demonstration}}&lt;br /&gt;
&lt;br /&gt;
== See Also ==&lt;br /&gt;
* [[Portal Test Chamber 16 (Advanced)]]&lt;br /&gt;
* [[Portal Test Chamber 16 (Bonus)]]&lt;br /&gt;
&lt;br /&gt;
{{TestChambersNav}}&lt;br /&gt;
[[Category:Portal chambers]]&lt;/div&gt;</summary>
		<author><name>Random</name></author>
	</entry>
</feed>