Wow, really impressed by both concept and execution! You've done so much with so little. I'm particularly impressed by the level design - it felt so organic and, at least at first, so hard to map out. I kept stopping at specific landmarks trying to make out what it could've been. I've gone through Nightmare but haven't done the inverted or second maps yet - multiple centipedes made me nope out for now. I'm definitely going back in, though. You knocked this out of the park!