Suggestions or Recommendations.

[mutilations]

I have a co-worker that asked me a gaming question I couldn't answer right off the bat. I'm posting this thread to maybe get some responses as to what might better fit the answer I want to give him. His question:

"I am looking for an Xbox 360 game that has action/set-up like Ninja Gaiden. It can involve dragons or ninjas, it doesn't matter."

I get that this is a vague question but this genre really isn't my forte. I think maybe Assassin's Creed would be a good answer but I'd like to hear some games from the forums users and I can research from there. I'm a bit on a time constraint since he's leaving for Mexico in a few days so this is why I'm asking for you help. Thanks in advance.