Download Horizon!
Go Diamond!
1. Move your Profile from your HDD to a USB from your Xbox 360
2. Open up your USB in the Device Explore from Horizon
3. Open your Profile in the Halo 4 Profile Editor
XP/Spartan Points
Here you can edit the amount of Credits and Spartan Points you can receive in the game.
Note: You can add 250,000 XP the first time you connect to Xbox Live, and 10,000 XP daily if you plan on connecting to Xbox Live, as far as the Spartan points I recommend only taking one at a time.
Loadouts/Spartan Armor
From here you can unlock Spartan Armor like Locus, Fotus, Dead eye etc, including load outs like Battle Rifle, Assault Rifle as well as the skins.
Note: This part of the editor now works online!
Loadouts
From here you can edit all 4 of your loadouts.
Example: Primary Weapon, Grenade, Armor Ability etc.
Note: This currently works online, but make sure to not edit loadouts that you have not unlocked in the game, remember to select 
to edit your other 4 loadouts!
Note: Loadout 0 is actually Loadout 1.
Campaign
From here you can choose a mission to either be unlocked Solo or Co-Op and on Easy, Normal, Heroic, Legendary difficulty.
Note: Remember to select 
for the list of missions.
Once done, Hit the 
tab.
Move your Profile back your HDD, and your done. Enjoy Horizon!
[details=Open Me]Thanks to the following for making this happen.
[b]Cheater912
Unknown v2
Xenomega[/b][/details]
