The game's currently on a Steam weekend deal for 6,99€, down from 13,99€. For some reason I have a spare copy in my inventory (and I think another key as well?), so I'm giving that spare away.
Never played it, but saw some Greenlight pitches for the game, and voted it in. They've got mutant land shark things, and apparently some neat voice engine. The game is still in Early Access, but it looks like the devs are working hard on it. The game's been in development for a few years already.