You can buy this Blueprint from Old Town University Store, or if you want it for FREE then follow this guide which shows you the location of the Blueprint when the side quest called 'Chasing Past.' After you kill the cannibal, go to the back of the room you will notice a door. The blueprint is in the small room behind the door. God Hammer Where to Find: Buy it from Old Town University Store Crafting Components: 2x Metal Parts, 2x String, 2x Aerosol, 2x Batteries, 2x Power Cable, 1x Electronics It adds Level 2 Burning and Electricity to Two-Handed Hammer, One-Handed Axe, Two-Handed Axe, Small Hammer, and Pickaxe. http://youtu.be/D0yJxoV1i5w