Intruder Combat Training is where your awesome side of yourself can come out. Without back-story, you play as a recruit to some agency whose business is badassery. Battle in deathmatches and unlock more powerful weapons including rpg7.
The shooting mechanics and the game engine used in this game has some serious potential. I hope to see this on the iphone soon. Anyways, this game by mmakt (yeah, I don't know how to pronounce it either), features two modes which are "Missions" - where you have to complete a total of ten matches which includes team deathmatches and free for all; and then there's the "Free Play" mode where you set the time limit, numbers of opponents and number of kills needed to have.
As you progress in the missions mode, you will unlock new weapons, side arms, equipments and outfits. Meanwhile, here is
Intruder Combat Training walkthrough showing some gameplay action.