Portal 2 Cheats
Alternate Title Screen
Beat the game for an alternate opening screen.
Contributed By: najay1.
Singing Turrets
In one of the test chambers, you will see a turret in a ventilation shaft at the very beginning. If you use the laser and reflector cube to destroy it and go through the new opening, you can find some turrets rehearsing a song.
Contributed By: RandomPerson3.
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