Well done. In fact, you did so well, I'm going to note this on your file, in the commendations section. Oh, there's lots of room here. 'Did.... well. ... Enough.'
Achievements are sets of challenges or goals (from finding a secret room to finishing a test chamber in a certain time or with a limited number of portals) that give a acknowledgement to the player for this special action while playing the game. When a player obtains an achievement, a HUD notification will be shown on-screen.
Achievements can be completed at any time in the game, as long as cheats are not turned on. However, certain achievements are story-related and can only be unlocked when reaching a certain point in the scenario.
Advanced Tunneling Finish every test chamber in Chapter 2 of "Portal Proficiency".
Aerial Mobility Support System Bounced 25 times on the repulsion gel with the same vehicle
Centrifugal Convoy Adjustment System Passed through the same portal 15 times
Condolence Letter Delivery Boom 50 test vehicles destroyed in "Portal Proficiency"
Convoyability 10 10 convoys delivered in the Portal Proficiency initiative
Convoyability 20 20 convoys delivered in the Portal Proficiency initiative
Convoyability 30 30 convoys delivered in the Portal Proficiency initiative
Deliverance from Non-delivery First job for the Condolence Letter Delivery Fleet provided.
Entry-Exit Relay Repeater System 30 times back and forth through the same portal
Extended Testing Opportunity Finish every test chamber in Chapter 1
Food and Artificial Sunlight Finish every test chamber in Chapter 2
For More Science! 5,000 Portal Transitions
For Science! 1,000 Portal Transitions
Full Chief Custodian candidate Finish every test chamber in Chapter 5
No Hard Feelings First turret decommissioned
Official Pre-Admittance Finish every test chamber in Chapter 4
Portal Deficiency Certificate 10 times tried to start a test run with an uncorrectly placed portal.
Post-Insignificance Finish every test chamber in Chapter 3
Principals of Portalability Finish every test chamber in Chapter 1 of "Portal Proficiency".
Profound Portal Proficiency Finish every test chamber in Chapter 3 of "Portal Proficiency".
Spectacularly Lonely Finish every test chamber in Chapter 6
Tunneling at Full Capacity Maximum amount of portals successfully used in a test run.
You monster. 100 Test Vehicles destroyed
Trivia
The "Transmission Received" achievement for Portal was added on March 1, 2010, and began the Portal ARG, eventually leading to the announcement of Portal 2. The update on March 1 also added 26 hidden clock radios to Portaltest chambers that delivered coded messages, further hinting toward the announcement.
The "Talent Show" achievement for Portal 2 was added on July 7, 2011; completing the achievement would earn you a ticket for the Steam Summer Camp.
The "Pit Boss" achievement for Portal 2 won the "Most Original Achievement" award on the Xbox360Achievements.org website, at the 2011 Achievement Awards.
The "Narbacular Drop" achievement for Portal 2 is a reference to a game of the same name, which the Portal series is based on.
Gallery
The Talent Show achievement, as seen at the Steam Summer Sale Prize Booth.
The Talent Show achievement, as seen at the Steam Summer Sale Prize Booth.
