In this tutorial, we will go over how to mod your campaign game in Halo 4. You can edit you weapon clip and ammo, as well as your grenade ammo and make yourself invincible. You will need the following : A Halo 4 game save 360Revolution Ok, now that you have these two things let's begin..... 1. Transfer your save to an xbox compatible USB device and then transfer your save from your USB device to your computer. (*Be sure to BACKUP your save*) 2. Open 360Revolution and scroll down to Halo 4 in the "Gamesave Mod Tools" section. Click on Halo 4 and it will open a new window within 360Revolution. 3. Click on "File" then "Open" and select your gamesave from Halo 4. Ok now we can start modding our weapons. 4. Once your save is open, simply change the numbers to whatever you would like to be. You can max them out if you'd like right now. Click on "Invincibility" to have infinite health. Note that the max clip/ammo size is 32767 and the max amount of grenades is 127. 5. Once you have edited what you want, click "File" then "Save" in the top left of the "Halo 4" window 6. You will now see a popup that says "File Saved, Rehashed, and Resigned." You have now successfully modded your Halo 4 campaign gamesave. Simply put the save back to your USB and you will be all set to go.