1: Download Attached Files
2: Extract to S4 League Folder
3: Run Game
4: Remove ALL equipped items
5: Unlock ALL Licenses and all weapons in inventory
6: Go to inventory Press F11, DO NOT CLICK AWAY FROM THE TRAINER UNTIL YOU HAVE FINISHED TICKING ALL OF YOU'RE DESIRED WEAPONS OR IT WILL BUG.
7: Weapons will change upon ticking.
8: Press F11 again and go play with you're unique Weapons!
Thanks to Cytriik!