I liked the artstyle a lot! The game has potential, and I would like to play a bit longer :)
The camera movement was a bit too responsive, a even felt a bit nausious because of sudden vertical movements, maybe you could smooth it out on Y-axis. The boxes on the last level didn't move as well as in the tutorial, had to push it for quite some time. Also a small slime can jump in the end of the dash - not sure if it's intended. Dash is also unusually long :) In general GJ, fun game!