GTA: Ben 10 Bomber
The Omnitrix is broken, but his enemy would not stop just because he has a broken Omnitrix. Ben knows that he needs to fight. Fortunately, some guys are the PLUMBER base lent him a blaster that he can use to fight the invading aliens with. With the blaster, Ben knows that he have a fighting chance. The idea here is to blast all aliens, but the problem that most of them are placed where they are hard to reach. Well, at least, you would find them a hard target especially that you are just mounted in a wall. In this case, you can use the wall to bounce your projectile and hope that it would reach the alien. The game would be much more challenging as you make some progress.