I have the best solution to your problem, crusader.
Buy the syndie surgical kit. Comes with a full surgical toll set, a muzzle, and most impotantly, an MMI that will instant emag any borg it is placed in.
Just sleepy pen, kidnap, do ghetto brain surgery, (or use circular saw to decapitate and get mannitol) make a borg body, and boom, guiltless murder, and a new ally. Just remember to disable suit sensors on the corpse.
You could also just ignore the objectives, and do something else. Objectives are a suggestion, not a goal, so just do whatever you want. Kidnap people and add or remove body parts, steal SM shard and meme on people, or laugh as you throw slipocalyse clusterbangs for the luls instead of doing your objectives.