http://www.trueachievements.com/game.aspx?gameid=3055 - 1200 MSP
Powered by the revolutionary HydroEngine™, the world's first true fluid dynamics engine for games, Hydrophobia™ is an experience unlike anything you have played before. This jaw-dropping technology models flowing water which behaves completely realistically, resulting in the most dynamic and dramatic gameplay you've ever seen.http://www.xbox.com/en-US/games/h/hydrophobiaxbla/
Engage in mind-blowing "flow combat" where gameplay results in a never-the-same-twice experience. Unleash floating oil fires, electricity, and the power of the water itself to wipe out your enemy as you discover the terrifying truth of the Malthusian agenda—Save the World, Kill Yourself.
And this weeks http://www.trueachievements.com/game.aspx?gameid=2311
additions are: Hyper Crash, Missile Command, Pressure Cooker and Deep Pocket Billiards.