Portal Test Chamber 15 (Bonus): Difference between revisions

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* Don't bother with the second energy pellet puzzle. Get past the slime channel by shooting portals through portals:

** Go to the start of the channel and shoot one portal down to the far end and the other on the wall beside you.

** ~~Lean~~ through until you can shoot again. There's a telltale buzzing noise and the launcher sight changes.

** Creep through the portal just until you can shoot again without dropping through. There's a telltale buzzing noise and the launcher sight changes.

** Shoot your [i]exit[i] portal down to the far end. Go for the wall that faces around the corner, not the one facing back to you. As soon as you shoot, step back~~. If~~ you don't get out of the portal before your shot lands, you'll drop into the slime.

** Shoot your [i]exit[i] portal down to the far end. Go for the wall that faces around the corner, not the one facing back to you. As soon as you shoot, step back: if you don't get out of the portal before your shot lands, you'll drop into the slime.

* In the ~~last chamber~~, put a portal at the foot of the victory lift, then step up onto one of the other platforms, put your second portal on the floor below and jump through. ~~Move~~ onto the victory lift platform as you fly up through the exit portal.

** Edge through again and shoot a portal into the far chamber.

* In the final room, put a portal at the foot of the victory lift, then step up onto one of the other platforms, put your second portal on the floor below and jump through. Manoeuvre onto the victory lift platform as you fly up through the exit portal.

=== Steps ===

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 * Don't bother with the second energy pellet puzzle.  Get past the slime channel by shooting portals through portals:
 ** Go to the start of the channel and shoot one portal down to the far end and the other on the wall beside you.
-** Lean through until you can shoot again.  There's a telltale buzzing noise and the launcher sight changes.
+** Creep through the portal just until you can shoot again without dropping through.  There's a telltale buzzing noise and the launcher sight changes.
-** Shoot your [i]exit[i] portal down to the far end.  Go for the wall that faces around the corner, not the one facing back to you.  As soon as you shoot, step back.  If you don't get out of the portal before your shot lands, you'll drop into the slime.
+** Shoot your [i]exit[i] portal down to the far end.  Go for the wall that faces around the corner, not the one facing back to you.  As soon as you shoot, step back: if you don't get out of the portal before your shot lands, you'll drop into the slime.
-* In the last chamber, put a portal at the foot of the victory lift, then step up onto one of the other platforms, put your second portal on the floor below and jump through.  Move onto the victory lift platform as you fly up through the exit portal.
+** Edge through again and shoot a portal into the far chamber.
+* In the final room, put a portal at the foot of the victory lift, then step up onto one of the other platforms, put your second portal on the floor below and jump through.  Manoeuvre onto the victory lift platform as you fly up through the exit portal.
 === Steps ===