Alternate title screen
Successfully complete the game to change the title screen.
Bonus store items
Successfully complete the indicated task to unlock the corresponding item for purchase at the store:
-Bionic Beanie: Successfully complete "Lunacy".
-WCC Flag: Successfully complete "High Five".
-Singing turrets
There is a turret inside a ventilation grate just past the elevator in Test Chamber 16. Jump over it, get the Refraction Cube, then use the laser to destroy that turret to open the grate. Enter the new area to find four turrets singing a song.
Avatar Awards
Successfully complete the indicated task to unlock the corresponding Avatar Award:
-Companion Cube: Successfully complete Portal 2 in Single Player mode.
-Love Shirt: Hug 3 friends in Portal 2 Co-op mode.
-Portal 2 Hat: Survive the manual override.
-Portal 2 T-Shirt: Successfully complete Portal 2 in Co-op mode.
-Turret T-Shirt: Successfully complete Test Chamber 10 in under 70 seconds.
Successfully complete the game to change the title screen.
Bonus store items
Successfully complete the indicated task to unlock the corresponding item for purchase at the store:
-Bionic Beanie: Successfully complete "Lunacy".
-WCC Flag: Successfully complete "High Five".
-Singing turrets
There is a turret inside a ventilation grate just past the elevator in Test Chamber 16. Jump over it, get the Refraction Cube, then use the laser to destroy that turret to open the grate. Enter the new area to find four turrets singing a song.
Avatar Awards
Successfully complete the indicated task to unlock the corresponding Avatar Award:
-Companion Cube: Successfully complete Portal 2 in Single Player mode.
-Love Shirt: Hug 3 friends in Portal 2 Co-op mode.
-Portal 2 Hat: Survive the manual override.
-Portal 2 T-Shirt: Successfully complete Portal 2 in Co-op mode.
-Turret T-Shirt: Successfully complete Test Chamber 10 in under 70 seconds.
