Hey! I like the game. Aestheticcs feel just great. Controls were a bit inconvinient to me. I would recommend you enable second controls scheme using ARROWS for moving and ZXC keys for shooting toggling healing mode and so on. This is very common in metroidvania games (take a look on Hollow Knight and Ori)
Another drop of confuse is that every time I press ESC button I have to start from the checkpoint.
Well, that's just my thoughts =) Anyway the game is cool. Keep going!