Here’s a tip: you’re not locked out of the trophy if you finish the dlc. Just replay the “Empowered Grawn” boss fight (the one at the end of the ship at Negul Neshai). After finishing the main dlc questline, I was short about a dozen enemies for the trophy, but remembered Deathtrap was part of the fight. It’s kinda rng for him to target the normal enemies, (he really likes targeting the boss) but I got the trophy to pop after a few runs. Good Hunting!