This game is actually pretty good. For those complaining about random avalanches, they aren't random at all... they are caused by a small, hard to see green blob that doesn't kill you on contact, but which will periodically flash, and whenever it flashes it causes rocks to spawn above you in your general location.
The game saves if you return to the menu while in game, so you can avoid loosing progress doing that each level. I only had it crash on me once myself.
Overall very good for a game you made in such a short time, fairly tight but unforgiving... not impossibly hard though. Good work.