Don't spam the W button, it apparently glitches out and you can't use it anymore, even on another save file. Only push it once (or possibly twice) per level.
It almost never responds when you push multiple keys, which is a necessity for some songs. (and sometimes it doesn't respond even when you only push one!) There also seems to be a lag problem, but that one might be partly due to my computer.. It's a shame, this game seems like it could be fun if it wasn't broken!
i managed to make it from floor 19 to floor 79 without dying or escaping. then i died on floor 80something because i didn't realize how low my health was, and had to restart on floor 19. i think i died a little inside.
The in game advertising completely ruined the immersion for me. I really enjoyed the game at first, but the constant advertising made it so that the only reason I even bothered to finish was for the badge.