Hey, thought this was a cool edition to the game so I thought i'd try it out. I'm using SandyBeaches version and I have two issues with it. 1: I had the haste modifier on my baseball bat and it swing so fast that I would click once and I would become exhausted, basically making it a really bad weapon instead of "legendary" 2: It doesn't seem to work on multiplayer, I know that it hasn't been stated that it does or doesn't but i'm here to report that it comes up on the console saying that it is loaded and whenever a weapon is equipped is registers the number of kills needed to upgrade te weapon however, it never gets any modifiers. Works great in single player though!