I love the main mechanic, I love the character design and the mysterious setting, and I love the cheeky bending of the 64x64 rule ;)
With regards to gameplay, I struggled a lot with figuring out which exit can be traversed by which character, and when the characters were in the same room there's no way I've found to discern which one I was controlling just by looking at it. All in all a pretty solid package, well done!