This was certainly an experience. I don't think I've ever seen anything close for a protagonist in a video game. Unless we count Earthworm Jim :) Feels like a complete experience, I like the intro cutscene and transition screens between stages.
Overall it's a fun concept, I like how short the death/restart loop is, the game isn't too punishing and makes you keep progressing forward. The difficulty balance could be better. The first level with lava is surprisingly difficult, whereas most ghost levels are easy. I didn't even fight the ghosts or try to avoid them because they inflict so little damage you can just take the hit and keep collecting the hearts.