I really enjoyed the game... short and fun. The aesthetic is great too, having in count the simplicity of the game. Not gona lie though, the last level made me curse 2 or 3 times >-<
In my opinion, you should give the player another key to dash, keeping in mind that you let the player move with "wasd" if he wants.
Overall, a very good game, moovement feels great, aesthetic on point, and ends when it has to end, without overstretching.