Very nice and cute 8-bit pixel graphics! Simple to learn, hard to master. You have made a fun and addictive puzzle adventure game here!
I like that in each level you have to move, and the movement itself is a puzzle. Which is something I intend to add in my game for variety. Here, it works perfectly!
The controls are easy and fluid. The sound was very fitting. Especially the level with the blocks that looks like dice that show "5" has great music.
Perhaps the only problem I had was that some icons (especially the ones near the enemies) need to be explained a bit better.
Awesome production! Be proud of yourself!