Codes, secrets & unlockables
Halo: Campaign Evolved cheat codes
A single, organized reference for every cheat and secret currently documented for Halo: Campaign Evolved.
Save your game before using cheats. Some codes may disable achievements or trophies for the current session.
Halo: Campaign Evolved skulls
Skulls are hidden campaign collectibles and official mission modifiers. Enable unlocked skulls from campaign setup before loading a mission.
Cheat-style skulls
- Bandana — unlimited ammunition and grenades
- Acrophobia — enables aerial movement
- Boom — increases explosion radius
- Cowbell — increases physics acceleration
- Grunt Birthday Party — special Grunt headshot effect
Challenge skulls
- Black Eye — shields recharge through melee
- Blind — hides the HUD and weapon
- Catch — enemies throw more grenades
- Famine — dropped weapons contain less ammunition
- Fog — disables motion tracker
- Iron — death has a severe restart penalty
- Mythic — increases enemy health
- Thunderstorm — upgrades enemy ranks
- Tough Luck — enemies evade more effectively
The campaign setup screen shows scoring and achievement effects for each active skull.