Incinerate the Companion Cube in Test Chamber 17 to unlock a secret Gamerpic (companion cube with wings). Defeat GLaDOS and escape to unlock another secret Gamerpic (a knife cutting a cake).Achievements
Accomplish the indicated achievement to get the corresponding number of Gamerscore points:
- Go for the Gold (15 points): Win a gold metal on a challenge map.
- Out of the Blue (25 points): Once you have control of both portals, only enter the orange portal.
- Rat's Tale (15 points): Find all the Rat Man dens.
- Is Anyone There? (20 points): Complete the game without ever taking a bullet.
- Saw That One Coming (5 points): Cause a rocket sentry to destroy its own rocket when the rocket has been redirected back towards it.
- The Camera Adds 10 Pounds (10 points): Knock a turret over with a security camera.
- Like a Rat (20 points): Trap yourself in a test chamber so that GLaDOS has to help you continue.
- A Feeling Like Floating (5 points): Dissolve a turret.
- Tests Like Chicken (15 points): Find the chicken's test results.
- Cupcake (10 points): Beat 5 advanced chambers.
- Fruitcake (25 points): Beat 10 advanced chambers.
- Vanilla Crazy Cake (35 points): Beat all advanced chambers.