Best fusion mod you can get is the Mod of Adrenaline. Recharges all active powers upon a kill but reduces power recharge speed by 50. Kills can be with your abilities or weapon. For people wanting to play classes like a Vanguard on Insanity difficulty, this is a must. I'm currently in my NG+ and without this mod, I wouldn't be able to play as aggressively as I am. EDIT: There isn't a PS4 thread for this which is what I'm playing it on but if anyone here is and is interested in someone to play MP with hit me up. PSN ID: doctorstinky I'm currently APEX rating 5008 so would prefer team mates interested in running Gold missions but happy to help drag people through Silver until they get good enough gear to run through Gold. I can solo Silver depending on what the challenge is at Wave 3 and 6 but it's still super difficult for me.