P.S. I realized savefiles can be edited? Might want to fix that before someone abuses it. I copied one savefile and renamed it to "Xirre" since I was on the wrong key. However, there was no cheating involved. Just switching of keys.
Wow, that's awesome Flick, we weren't expecting someone to actually beat all the levels. And yes, i just confirmed that bug after you beat the last level you get a black screen, we're looking into it, hopefully your save wasn't affected.
Fun :) I did go through 20 levels, only to get a black screen with no options to do anything, so I guess my game didn't save. I'll just have to do it again ;)