1. Start campaign
2. save and quit
3. Go to the dash board
4. At the dashboard Go To System Then storage
5. Go on What ever device you use Eg Hard drive, From there Go on to Game's And Apps
6. Find Saints Row: The Third, Click on it and find your Saved Game Wich You Use
7. Click on the saved game and move it to Memory Unit or Your other device's you can use to plug into your laptop/computer (Which ever suit's you)
8. Open Up Horizon and find device explorer
9. Open up your device and find your saved game.
10. Once Open It Should look a little like this
11. Activate what you would like as it's all your's now to mod, You Can also Add guns By hovering over then chosing your gun of your choose, Changing Your You can also add car's and what not by getting a download link and adding it on the garage feature.
NOTE I WILL ADD SOME WHEN I GET THEM .
12. Once you have finshed your modding. Click The save button (I advice doing it twice)
13.Put your usb back in the xbox go to storage.
14.change your saved game back to hard drive and enjoy your modded saints row