High On Life

Non-missable story achievement however... I recommend defeating Douglas before Krubis so you don't miss the "Gunning For Your Job" achievement.

You'll find Douglas at the very end of his bounty mission in Dreg Town. He's very active and can be found leaping from wall to wall. I found using the alternative fire mode on Kenny (Glop Shot) helped slow down time and does a big enough impact to knock him onto the floor. Where you can use Knifey to deal a high amount of damage. After a short period of time the floor panels will start becoming electrified. Do your best to avoid these, if you see the high voltage warning just jump or dash out the way to avoid damage. Grunts will also spawn in but these guys usually just kill themselves on the electric flooring so can be ignored. Rinse and repeat until Douglas is defeated.

Warning: As you leave the HQ via the fan blades make sure you don't fall off the map. People report getting stuck and having to restart the game entirely.

Not missbale.

You can play the bounty hunt mission for Douglas after you've finished your first bounty mission for 9-Torg.