Portal 2 Co-op Course 1 Chamber 4

Rat Maze

mp_coop_rat_maze.bsp Rat Maze

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This is the fifth level in Co-op mode of Portal 2 and the fourth chamber in the course. There are no obvious dangers in this chamber, but the player in charge of the buttons can accidentally crush the player in the maze with the blocks.

The goal in this chamber is to get the Discouragement Redirection Cube from behind the glass and use it to reflect the beam to the receptacle.

Mechanics

1. Portalble surfaces...^{[explanation needed]}
2. 2 Heavy Duty Super-Colliding Super Buttons
3. 1 Thermal Discouragement Beam

Hazards

1. Being crushed

Walkthrough

Naive

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#	Atlas	P-body
1		Fire your portal on the top left corner and on a panel near the buttons. Go through the portal and walk to the end of the hallway and stand under the light.
2	Stand on the Heavy Duty Super-Colliding Super Button with the arrow pointing towards the glass.
3		Walk to the new small area and wait for your partner to walk off from the button.
4	Walk away from the button and wait for your partner to go to the end of the first floor.
5		Proceed to the end of the floor, jump down and turn around.
6	Go stand on the same button.
7		Jump down and run to the end of the hallway and stop before the final drop.
8	Stand on the other button.
9		Get on the yellow block and fire the portal from the top of the maze.
10	Get away from the button after your partner has fired the portal on the wall.
11		Pick up the Discouragement Redirection Cube and get back on the block.
12	Stand on the button again.
13	Place portals on the panels next to the beam and on the wall facing the beam receptacle.	Go through the portal and place the Cube under the Thermal Discouragement Beam and aim the beam on the panels next to it.
14	Proceed to the disassembly area.

Gallery

Super Button platform.   View of the exit.

Achievements

Team Building

Team Building Complete all test chambers in the Team Building co-op course Difficulty: story-related How to obtain: self-explanatory.

GLaDOS' voice lines

• "I don't know what you think you are doing, but I don't like it. I want you to stop." | Download | Play
• "The two of you have forged an excellent partnership, with one of you handling the cerebral challenges and the other ready to ponderously waddle into action should the test suddenly become an eating contest." | Download | Play

Crushing deaths:

• "Orange just taught blue a valuable lesson in trust. For that, orange receives 17 science collaboration points." | Download | Play
• "Blue just taught orange a valuable lesson in trust. For that, blue receives 14 science collaboration points." | Download | Play when Atlas kills P-body.
• "Orange, blue isn't a human. The lesson on trust only needs to be taught once. Orange is penalized 1 science collaboration point." | Download | Play
• "Blue, orange isn't a human. The lesson on trust only needs to be taught once. Blue is penalized 1 science collaboration point." | Download | Play
• "Orange, now you're just being cruel. Orange receives 25 science collaboration points." | Download | Play
• "Blue, now you're just being cruel. Blue receives 25 science collaboration points." | Download | Play

Finish:

• "While it may appear that I am only tracking your accomplishments using science collaboration points, the truth is every aspect of your performance will be reflected in your final score." | Download | Play
• "For instance, Blue, you just lost two opportunity advisement points." | Download | Play
• "For instance, Orange, you just lost two opportunity advisement points." | Download | Play