Yeah.
I've only completed the first 3 Advanced Chambers; the others are beyond my skill level.
-Canama
I've actually beaten all of them. The bad thing is, I did it while in Steam's offline mode, so I'll have to do them
again for the achievements. Oh, well, when I get around to it, at least I'll be able to do the Radio achievement...
do you beat Advanced Chamber 16!?
Test Chamber 17, I could beat, but it was too tedious so I stopped.
I got stuck on 18 pretty early on.
-Canama
Stand on the cages, then aim a portal so you can drop one of those heavy block things from the hidden room in front of one of the turrets facing each other. Grab a cube, portal your way to the top of that turret's cage and crouch behind the cube. pop a portal to block
that turret's line of fire, grab the cube and get back to the hidden room, drop another heavy block in front of that turret. drop a normal cube through the hole, then grab the other one and fall through the portal. crouch behind the storage cube as you walk, transporting both to the safe zone behind the two turrets. portal over to the room of cubes, and use them to make walls in front of the turrets. (Crouch behind a cube, and as soon as you let it go, the turrets won't see you; this gives you a few seconds to run away.) Stack two cubes in front of the door, then open it and pop a portal so you can get above/behind the turret behind the mesh fence. From there, you can either take a cube with you for safety, or you can just run for it; basically, shoot a portal into the exit hallway as far in as you can get it, then run through to the elevator. Phew!
