Infernal Hells Vengeance is the game I'm on about which is a FPS shooter with alot of clever ideas and overall I thought the game is pretty good.
I seen this for £2 in Game and thought why not... could be crap could be good.... but that's less than what a pint costs.
I would recommend if your able to pick up a copy for less than I fiver, its really worth a purchase. There no multiplayer mode, just a challenging single player mode.
The game does have a few flaws. However I did notice the developer Playlogic only ever made one game for the 360 and it was this.