I really liked the visuals, the sounds and the "melting ice" effect. The sound loop great albeit very short.
What I don't like is when a game requires me to have a mouse with high precision to play it. I understand that it is a skill game but the gameplay here is all about making pixel perfect movement with the block.
I gave up on lvl 9. I felt that those two cages with two enemies in them were just over the top. I also could not stand the 3 second loop anymore.
I see excellent programming here, if you could make this game more of a puzzle game than a skill one I think people would rate it much higher.