I enjoyed it as well, although I found it a bit long. After the first half of the movie it kinda doesn't go anywhere. I really enjoyed the premise, however. Once he gets more money I'm sure the sequels will have better actors and stories. The two girls were really good actresses but their script was quite stupid.
I was actually talking about the Japanese guy having the chance to kill him, funny you mention that.
*SPOILER* I mean, he's got the scalpel in his hand, already stabbed him in the leg, he can't stand up....CUT HIS FUCKING THROAT!!! And then how does the doctor get the gun away from the cop at the end? Are German police that inept?
I, like you, also liked the fact that there was very little gore, yet it was disturbing nonetheless.