Okay, like...well, everyone said before, the sarcastic guy was too much portal-ish, reminded me like a mix between Glados and Cave Johnson. I think if you had done something different with the narrator it would have been an AMAZING game!
Right now it is just plain old awesome.
(spoiler ahead for people who didn't played this game yet)
But while you did something like portal that i think could have done some other way, the one think that had portal you should have copied you didn't, the blob finding a way out! When the limiter got broken i was like "oh boy, here we go" but nothing happened, which was really disappointing.
Nonetheless, great game! This is what i was looking for when i said today "i'm going to play a puzzle on portal, hope it will be something original"