Nice visuals, solid mechanics. I liked the shotgon dash a lot at first but the sound effects got a bit annoying with the amount you end up using it. The wall dash also was pretty finicky. It was very not obvious what switches were doing, often hit switches before I even saw the doors (I assume) they opened. Lack of checkpoints was kind of ok because of the level shortcuts but there really needed to be one after you get out of the mine. There was a f.inicky platforming section that required going over two pools of lava with a fully horizontal dash I died on 3 times and had to backtrack through the whole level to try again, ended up tapping out on the third try, I assume I was near the end of the game since I had all the powerups.
Overall great entry.