Dead Island: Definitive Edition Cheats
Go to the warehouse, and get the Hammer and Baseball Bat. Then, fast travel to the Church, and sell them to get approximately $400. Go back to the Warehouse, and the Hammer and Baseball Bat will have respawned. Repeat this as many times as desired. Note: You must be in the City and have discovered both the Church and the Warehouse to do this trick.
Easy Weapon Duplication (Pre-Patch)
Pull out the weapon you want to duplicate and wield it. In digital fighting control scheme, hold the left trigger as if to throw the weapon, hit the Y button at the same time as you pull the right trigger to throw the weapon, if you time it right you will throw your weapon and drop a second copy at whatever the current durability of the weapon you dropped was. As a bonus keep double of your favorite weapon and use until it breaks, discard and copy the fully repaired version to ensure your never stuck with a broken weapon.