running (with SHIFT) through the walls left (on 1, 2 and 3 lvls) makes you go down, on which underground lvl is the exit? (or may be its not a feature, but bug? XD)
lol yeah there is a bug where you can run through the walls if you press into it. There is only one end to the game where you have to beat all the levels. I tried to fix it but I'm not sure how...unity's box collider just isn't working.