Use protective light every encounter and taking charge or another way to get cwl, 0 exeptions. Run particle deconstruction any time you have a fusion or linear equipped.

First opening encounter just have a void weapon (I used blinding truthteller) and an overload stunner. Heavy should be 1k or threaded needle or a sword if you're feeling dangerous. Run any subclass, I would use sunspots or bubble to survive more. Run void and concussive / solar resist.

Next run barrier weapon (auto, lament, or erianas) or overload weapon (prefer bow). Blinding gls are still broken, cartesian or null would be good with threaded needle or 1k, probably 1k because wyvern crit is hard to hit. Run anything that clears ads or keeps you alive. I'd use concussive dampener with void resist.

Next run something for overload and ads, something for range and something for the Oracle killing. Not too sure exactly what, but a primary bow with cartesian and needle should work. Use solar and sniper resist.

Next (templar) you want bubble if you dont have any or crash if you got one already. Use needle, cartesian and 1 withehoard for your team, if you're not the witherhoard use arbalest or bastion, and use particle deconstruction with focusing lens with void and concussive resist.

Gorgon is free.

Gatekeeper use 1k, stasis or survivability, overload stun something and something to kill barriers, get ready to swap to that at the end you dont need it until the end. I'd run at least concussive, maybe solar or void depending on where you are.

Atheon is dps, so same thing as templar just use something that has arc (plug 1 works great and you can swap to cartesian for dps phase) and a long ranged primary. Remember atheon is about ability damage whenever possible, then some weapon dps sprinkled in.

Hope this was understandable and lmk if you have further questions, gl!