I can't. I played the demo and was so bored that I almost fell asleep. The shooting is just so bland and boring. Pair that with the $50/60 price tag and I'm not willing to pick it up. Not even for half-off on Amazon today. I'll wait for it to be $15 or less in the (probably near) future.
I've been looking at the new Penny Arcade Adventures game on Steam since it's release. I want to pick it up but I need a reason to. Would anyone want the copies of Breath of Death and Cthulhu Saves the World that come with it? I already have these games and if I knew that I would be giving them to someone who wanted them, I'd go buy the game immediately.