Things needed
Notepad for remembering you XP or use your head and remember
Horizon or modio i will be using horizon
And HxD or any other program similar
Ok so first find out how much XP you have go on the game press select press LB and go to skills TAB and your XP will be visible either type it down in notepad or remember it
Next drag and drop your save onto your desktop open HxD and open your save then search for your XP mine is currently 1571
Then click ok after you will need to click search again it will then bring you to this
Change those four digits to 9999
After click save
Then either drag the save into horizon or modio and click rehash and resign pop it back into your HDD go to the game and it should be done for more XP dont spend any after your in game go kill an enemy and save then search your xp again and max it out to 99999