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Full map
Reach level 20 to unlock the full map that reveals the location of all items, weapons, and other items.
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Getting through barriers
Use the indicated weapon to get through the corresponding barrier color:
| Orange | Fire Arms |
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| Purple | Foam |
| Blue | Friction Dampener |
| Green | Grenades |
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| Red | Missiles |
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Infinite grenade ammunition
Reach level 40.
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Bonus Gamerpics
Overcome the first Tarantula to unlock a Gamerpic. Get the facemask to get all the pieces of the XOS-7 Omega Armor to unlock another Gamerpic.
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Infinite rocket ammunition
Reach level 50.
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Health boost
Reach level 10.
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Infinite foam ammunition
Reach level 30.
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Achievements
Do the following things to obtain the corresponding Gamerscore points:
| 5 Points |
| Look Out! | Kill a soldier with a Bomba. | | | Walkin' on Water | Make it from one end of lake to the other in hyper-Speed. | | | 10 Points | | Proven Grounds | Finish the Proving Grounds. | | | Minimalist | Finish the game with less than 13% of the items. | | | Serious Complex | Level-up to experience level 50. | | | 15 Points | | Let's Get Punchy | Melee 5 soldiers. | | | To Kill a Blackbird | Destroy the helicopter attacking the Vice President. | | | 20 Points | | Completionist | Finish the game with 100% of the items. | | | My Head A-Splode | Get 50 head shots. | | | Bomba Punter | Punt 20 Bombas. | | | Make 'Em Scream | Get 100 soldiers to scream. | | | 50 Points | | Hero | Finish the game on any difficulty setting. | | | | | | | | | | | | | |
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Golden guns
Acquire all twelve gold bars to place a marker on the map to a secret room. The room contains the golden versions of all guns, which give double experience points.
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Easy health and ammunition
Save the game at a checkpoint. Leave the room, pause the game, and select the 'Load Checkpoint' option. You will retain your current health and ammunition and rebegin at the checkpoint where you can re-collect the health and ammunition there. Repeat this as many times as desired.
