Very fun, and offers a good bit of challenge even on the easier difficulties. I had one problem where after I completed the first difficulty it would just display the "you win" screen when trying to change difficulties, but that should be a fairly easy fix. My main bit of feedback in terms of gameplay is to add more feedback for things like what object hit you, and when the bombs explode, even if its just like a small particle effect or sound effect. I spent a while dying from hitting the wall and thinking I accidentally ran into a bomb, and not realizing the wall was killing me for instance. Other than that it was very fun.