Return to Aperture for further testing. Our Portal 2 Walkthrough provides a walkthrough for story mode, tips for co-op, and unlockables.

The fan-made modification to Portal 2, called Portal: Revolution, gained popularity shortly after it was released. With over 40 new test chambers, there are naturally some that players find difficult ...

To get past the large chain-link wall in the next room, look for a lightly-colored surface on a very low-hung ceiling panel. Place a blue portal on that surface, then place an orange portal on the ...

It turns out that Aperture Science's greatest creation, the Portal Gun, survived the events of Portal, which left the Aperture labs in rubble. Unfortunately, its least greatest creation, GLaDOS, ...

It's here where you'll battle GLADOS to complete the game. At first there's nothing to do but stand around and listen to GLADOS taunt you. Eventually, a piece of the machine will drop out of GLADOS.