on level 18 there you there is a glitch where don't fit through the tunnel your suppost to be shot out of
It's not a glitch :)
Not bad. i realy liked this game. The gameplay is solid and pretty fun. At first the portals seem pointless , but they become very usefull later in the game. The music can get a little monotone after a while but it didn't annoy me that much. Overall a fun puzzle game and a very sound idea.