All mission maps: Create a new profile, name it VENGAR, and start a new game. A message will appear to confirm correct code entry. All of the missions in the game will be unlocked and available at the start. Stronger characters: Create a new profile, name it MATTSOELL, and start a new game. A message will appear to confirm correct code entry. When playing under this file, Tex and Brutus can take more than three direct shots of the rocket launcher without being near death. Note: "MATTSOELL" is the project director for Bungie who made Halo. Note: You must watch the full ending once, have all the DNA canisters, and at least one open campaign file for this code to activate. All characters: Create a new profile, name it GARNER, and start a new game. A message will appear to confirm correct code entry. All single and multi-player mode characters will be unlocked. Brutus' special changes: Create a new profile, name it GARNERVEN, and start a new game. A message will appear to confirm correct code entry. Brutus' special meter will last longer, and attacks be more powerful. Note: You must watch the full ending once, have all the DNA canisters, and at least one open campaign file for this code to activate. Brutus' appearance changes: Create a new profile, name it GARVEN, and start a new game. A message will appear to confirm correct code entry. Brutus' character will look completely different, and he is several times as powerful as before. Note: You must watch the full ending once, have all the DNA canisters, and at least one open campaign file for this code to activate. Rapid fire weapons: Create a new profile, name it RAPIDFIRE, and start a new game. A message will appear to confirm correct code entry. All weapons, even the shotgun, will fire at a higher rate of speed. Note: Ammunition is eaten up much faster. Note: You must watch the full ending once, have all the DNA canisters, and at least one open campaign file for this code to activate. Dumber enemies: Create a new profile, name it SPRAGNT, and start a new game. A message will appear to confirm correct code entry. Even under the Brutal difficulty setting, enemies will miss you more often, act stupid, and your squad will be more intelligent and shoot and kill enemies with no instructions. Note: You must watch the full ending once, have all the DNA canisters, and at least one open campaign file for this code to activate. Better aim: Create a new profile, name it DEADAIM, and start a new game. A message will appear to confirm correct code entry. You will notice your teammates aim and hit things much more often. Flint's special meter will decrease slower, and she will drop enemies quickly. Note: You must watch the full ending once, have all the DNA canisters, and at least one open campaign file for this code to activate. Higher defense: Create a new profile, name it ERINROBERTS, and start a new game. A message will appear to confirm correct code entry. This somewhat increases your squad's defense in damage taken. They will not get hurt as often, but also seem to dodge projectiles. Note: You must watch the full ending once, have all the DNA canisters, and at least one open campaign file for this code to activate. Quicker death: Create a new profile, name it DBLDAY, and start a new game. A message will appear to confirm correct code entry. Everyone will be easier to kill; your squad may also die much faster. Note: You must watch the full ending once, have all the DNA canisters, and at least one open campaign file for this code to activate. Cartoon mode: Create a new profile, name it HVYMTL, and start a new game. A message will appear to confirm correct code entry. During the game, everything looks like a cartoon, with coloring book-style models, blood resembling paint, lava with a paper feel, and different level layouts. Note: Note: You must watch the full ending once, have all the DNA canisters, and at least one open campaign file for this code to activate. Tougher game: Create a new profile, name it BRUTAL, and start a new game. A message will appear to confirm correct code entry. This code completely beefs up the enemy AI and seems to change their behaviors. Even under the Standard difficulty setting they will ambush you, find a way to hunt you, and come flailing out in order to kill you. They will take the same amount of hits, but be much harder to put down, thus making the entire game harder. They drag themselves away when wounded, similarly to the original previews of the game or when you fight the Halo aliens under the Legendary difficulty setting. Note: You must watch the full ending once, have all the DNA canisters, and at least one open campaign file for this code to activate. Bots in multi-player: Start a game of Squad Deathmatch. Plug in controller two and set the A.I to "Fire At Will". Go around and pick them up some good weapons and medkits, then disconnect the controller. Your squad will now be facing three heavy thinking bots in multiplayer mode.