Meh, I've seen better :P

interesting

Really nice concept! I managed to save the chair from the begining all the way through!

As much as I like Portal 2, I still like seeing a somewhat of a Portal 1 theme. The only thing I might suggest is keeping the surfaces in multiples of 128 Hammer units for better texture alignment. For round portal doors, I make a brush that's 128 X 128 X 32 and carve a 32 sided round hole in it then make it func_detail (then save it for next time). Other than that, I enjoyed playing it.

Ok, but the button height is painful to reach

Pretty cool. Was like an alt version of P1 start. Thumbs up, good job.
It would be nice to see another that provides more of a challenge now that you've introduced things.

Interesting

The "anti-grav" rooms were very creative.

Sorry, but you cant export a map back to the PeTI after you dont anything with hammer, and since the entrire map was based around hammer, its impossible to do.

Good :D use beemod to auto portals

Real good made :)

Fun start, I liked it. :)

and good job :D
good luck

Hey fix all auto poryal with beemod and the cristals