The biggest things you or anyone similar can do to set yourself apart is to first have a pvp loadout. So don't simply just use the same stuff you would elsewhere (I keep coming across a bunch of Starfire Protocol warlocks with fusion grenades, for example, and Mint Retrogrades for special). So skip that gun and use likely a shotgun or fusion rifle or a spread shot hand cannon and exotic armor that is actually of use in the gamemode (think Ophidian Aspect or Transversive Steps for warlock, Stompees or Knucklehead Radar for hunter, maybe One-Eyed Mask, ACD Feedback Fence, Peacekeepers, or Peregrine Greaves for titan to name the main ones to consider). But more importantly, don't still have heavy ammo finders, resist mods, or scavengers on your armor. Instead, make use of helmet targeting mods for your respective weapon elements, and the same goes for loader/dexterity mods on gauntlets, unflinching on chestpiece, and a holster + maybe a surge mod on boots or that new one which boosts sprint speed and jump height slightly. Class item matters less but I just make sure to have a reaper mod for at least one way besides my super way to make orbs for some slight healing and a slight damage boost if using the above mentioned surge mod. Also, pay attention to avoiding anything that uses the wording 'combatant,' including under your subclass fragments or artifact perks because these don't affect guardians and only instead work on PvE foes. Things will have to say 'target' if you want them to apply in Crucible. Anyway, I hope this helps! But I concede that Bungie could do things better with their seasonal challenges for example for those like you who don't want to play the mode.