I've been waiting for this game for along time now, and I can honestly say I am not disappointed. It's quite short and there's not alot of holding people at gunpoint, but it's very enjoyable and the achievements are very creative, if anything it's the way achievements should be done. I'm also really looking forward to some awesome user created maps and what features future updates (if any) will bring.
There's a demo available on Steam and on his website if any of you are curious.