I diddn't make it just found it.

This 1 u gotta sling urself through the insiderator or w/e its called.

This 1 u gotta jump into the pit and make a portal in front of the platform im on and fly up there.

[img=http://img91.imageshack.us/img91/9114/portaltest0003hy3.th.jpg]

There is also turrets you can have some fun with ^^

This 1 u jump down put a portal down and then quickly put a portal on the other side of the glass so u go flying up (its pretty fun xD).

Messed up on 1 and accidently double posted =\ woops