Mission select:To unlock mission select, go to the mission selection screen. While holding LB RB press Left(2), Right(2), Y(2).Infinite ammunition:To get infinite ammunition for a certain weapon, kill an enemy or ally with that same weapon. Pick up their gun(if you have full ammo then fire a few shots). When you try to pick up the other of the same gun you will continually receive more ammo for it, and it will remain on the ground.Dead or Alive enemies:To determine if an enemy is dead or alive, aim your crosshair at them. If the crosshair turns red, then the enemy is still alive.Kak 98:The Kak 98 is one of the most powerful weapons in the game. There is a scoped-Kak 98 in the final level “Dragon