Fun game, was actually quite easy, completed all levels in one go from second try.
Also I was going to rate it low on theme until I played the level 5. Because before I wasn't getting much damage and had no idea that my ghost is bigger when getting damaged. This is actually a clever mechanic and theme interpretation!
Also nice touch that there is a slow motion mode on last seconds of the level!
For some reason I see rockets and explosions on screenshots, but there were none in the game (Web build).