I enjoyed the micromanaging of portals waay more than I thought (though I did groan a few times) :) You have some formidable level design talent :) Especially impressed with level 7 - looking for different places to get the leg to poke out.
I think I would've liked to have known how many levels there are in the game?
[I played to level 9 before my brain decided to call it an evening, but I had lots of fun until then, and I'll probably come back at some point :) ]