At the title screen, press X, L2, Triangle, R2, Select to unlock all missions.All maps in Quick Mission mode
At the title screen, press R1, L1(2), R1(3) to unlock all maps in Quick Mission mode.All special features
At the title screen, press L1, L2, R1, R2, X, Select to unlock all special features.Extra health and armor
At the title screen, press L1, R2, R1, L2, Circle, Up, L1 to start each level with health and armor (which is a whole new circle of health).Easy kills
Have a rifleman, sniper, and a demo or support. Use your sniper when the threat indicator indicates that there are men from afar (yellow). Use your rifleman when it turns orange, and your support or demo when it turns red.Get rocket launcher while prone
When going prone, quickly go to the weapon inventory and select the rocket launcher. Note: If you do not do it fast enough, you will not get the rocket launcher while prone.Crawl into ship
While online, go to the docks and enter the ship. When you are on the ship, get as far as you can to the right beside the ramp. Go to the second line on the ship, then zoom in and very slowly turn to the right. You will start lifting up into the air. When you are as far as you can get, look at the ramp and start crawling to it. If done correctly, you should be able to crawl into the ship. Once there you can shoot out, but opponents cannot shoot in.Medals
- Bronze Star: Get 15 kills.
- Silver Star: Get 20 kills.
- Distinguished Service Cross: Get 25 kills.
- Congressional Medal Of Honor: Get 30 kills.
- Purple Heart: Get wounded or killed in action.