FearLess Cheat Engine

Hi. I'm looking for somebody who plays dying light and knows how to use cheat engine. If so, can you teach me how to change the damage for the weapons? I found some videos about using cheat engine in dying light, but non of them teach me how to change the damage output. I'm too much of a retard to know what to do and my friend who uses cheat engine wont help me. I've been stuck with these 2k-4k damage dealing weapons and its getting boring. I don't know if I CAN change the value of the damage with cheat engine, or if its a mod, but please let me know. Thank you if you're willing to help