Nice little game. :-) The graphics are simple, but still good looking. By varying the speed of the clouds and mountains in the background you have achieved a nice effect. What engine did you use to create this game?
Sometimes I got error messages in the middle of the game, unfortunately I couldn't find out what it was related to. After dying/melting I always got this error: Failed to obtain/convert traceback! I'm not sure if it's my laptop or the game.
Still good job!