Very nice platformer. Art is great, but the design needs some work.
Notes:
Blind jumps in places, I expected holding a direction to look there.
Very unfair enemy placement in some places. I died two times, both hearts, at the blue respawning enemy right before part 3? of the second? level. Then a respawning flying enemy killed me over pt 3's pit, when I was holding the drill position in the air.
The boss swarm of the level was way too hard, and dying there put me back a long way. So I gave up there, not going through that again.