I've racked my brain for the past 2-3 days thinking of an answer for this one, and the only games I can think of are maybe Flashback and Blackthorne. I had a lot of trouble getting any of my friends into either game because of the Prince of Persia'ish controls (which I honestly hate to a fair degree) but the games themselves are some excellent fun. Especially Blackthorne. I love shotguns and you should too.