Halo 3 and Halo 3: ODST Cheats

Halo 3
Toggle panning camera
Click Left Analog-stick + click Right Analog-stick + LB + RB + Up/Left.

Show coordinates
Click Left Analog-stick + click Right Analog-stick + LB + RB + Down/Right during a local match or replay.

Toggle weapon display
Hold LB + RB + LT + A + Down during a local match or replay.


Halo 3: ODST

Firefight mode: Missions
Complete the indicated mission in Campaign mode to unlock the corresponding Firefight mode mission.
Alpha Site: Complete the ONI Alpha Site mission.
Chasm Ten: Complete the Date Hive mission.
Last Exit: Complete the Coastal Highway mission.
Lost Platoon: Complete the Uplift Reserve mission.
Firefight mode: Recon Armor
To unlock DARE's Recon Armor, complete Campaign mode under the Legendary difficulty.
Firefight mode: Characters
Complete the indicated task to unlock the corresponding character for Firefight mode.
Buck: Complete Tayari Plaza under the Normal or higher difficulty.
Dare: Complete the Campaign under the Legendary difficulty.
Dutch: Complete Uplift Reserve under the Normal or higher difficulty.
Mickey: Complete Kizingo Boulevard under the Normal or higher difficulty.
Romeo Character: Complete NMPD HQ under the Normal or higher difficulty.
Recon Armor
Unlock the seven "Vidmaster challenge" achievements in both Halo 3 and Halo 3: ODST. Then, flip the switch on your Bungie.net service record (look for the "Road to Recon" under your trophy shot). Note: You will need a valid and linked Bungie.net account to complete the required steps.