Test Chamber 16 is Portal 2‘s final main puzzle room and it’s definitely one of the game’s trickiest. It combines excursion funnels, repulsion gel, and turrets in a way that can stump even ...

With the turret taken out, take a peek into the large room of the Test Chamber. You’ll notice that just around the corner are four turrets on a raised section of floor facing all directions ...

Continue forward to another sterile office-type room and through an incandescent particle field. In the room just past the particle field is a small red switch. Press the switch and a small bot in ...

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 ...