I have to admit that this is a really game! I love how I just have no idea what's going on. It's hard to ask for more detail, because that is not the point of the game. I really like how everything moves so well. Even the parts where the screen goes blank aren't that difficult. I'm fairly certain those silhouettes are checkpoints.
It's just a game that seems to have no end. It's mostly because everything is so dark. Oh yeah, that's where you got the name. It seems like the protagonist keeps transforming. Not sure what that's all about.