Cheats, Codes & FAQs
Unlock Portal 2 T-Shirt (Male & Female) Avatar Award
Complete Co-Op mode.
Unlock Companion Cube Avatar Award
Complete Single Player mode.
Alternate Title Screen
Complete the game once
Unlock Portal 2 Hat Avatar Award
Unlock the "Wake Up Call" Achievement (Survive the manual override)
Unlock Love Shirt (Male & Female) Avatar Award
Unlock the "Friends List With Benefits" Achievement (While playing co-op, hug 3 different people on your friends list)
Unlock Turret Shirt (Male & Female) Avatar Award
Unlock the "Overclocker" Achievement (Complete Test Chamber 10 in 70 seconds)