The game has a lot of potential, it's a fun fast paced experience with a refreshing touch. The dashing through enemies to heal bit is really engaging and forces you to aim well and time your dashes so I liked that a lot. The tiles are well done, but the pitfalls need a bit of contrast on the edges, in my opinion.
The character moves a bit too fast, but that in itself can be a strong point of the game to help polish the player's control skills.
The hitboxes for enemies are a bit small too, but again, reinforces the "Get good at aiming" aspect.
In any case, amazing job! Would love a full game with some polishing done.