This actually looks pretty interesting.
I would probably take this for a spin if i had it and my friends were over.
Always fun to play such games.
We currently have played Vagante, Crawl and some other games and currently, Crawl is our favorite couch coop game.
This reminds me more of my boxhead 2play coop time, which was also a lot of fun, but this is that in a more interesting and challenging way.
Good luck and i hope you get somewhere with this. :D
Actually voted yes on greenlight, just because it looks interesting.