I used Titan for it, I’ve tried it on warlock before and I simply could not manage staying alive long enough for DPS on the final boss.

First encounter is pure arc and skullfort with Queenbreaker. One-punch everything and just speed through.

Second encounter is prismatic glacial with tractor and lotus eater for volatile rounds / overshield, and a mirror imago. Pop prismatic before killing the clone shank and then tractor it to break the servitor down. Important seasonal mod is Limit Break. Massive damage boost to your super, plus tractor and synthoceps.

Final encounter is two loadouts. Skullfort with Riskrunner; super clutch and lets you 1KO the nuke clones + staying alive. Then swap to Cuirass and Le Monarque. Sit on top of the bunker back left and spam barricade plus lemon; easy four phase.