SPOILER
Not sure if I was supposed to do this for the last level, but I skipped the wall puzzle at the bottom where you had to press the button while on the other side of the first wall to open the path to the exit, by going to the top right where the bouncing cube is, and simply dropping down into the passage where the exit is from the bottom-right.
really, really good, but there's a bug i think on level 11. I'm putting the portal where it needs to be, and thelight bridge isn't passing through the portal >->
lol i found a glitch.
when i was going to shoot a portal,i shot a portal on a ladder,and the portal was floating in mid air.
i think the glitch i found was funny.
i like it soooooo much!
good quality,good levels.
5 stars!
why is it so glitchy D: