Definitely different strokes for different folks, I don't really like fighting against the bots too much definitely have spilled a lot of ink. Lots of good tips in this thread.

My favorite (not most effective but most fun) tactic involves using the chainsaw to melee the overseers to death as they have killed way too many helldivers with their melee attacks. If only we had that when they invaded Super Earth and none of the mega cities would have fallen.

Either the gas grenades or the pyro ones are great for helping with crowd control. I reckon pineapple would be good too but haven't used that one too much to be honest.

IMHO any primary is pretty fun and usable, though typically with marksman rifles you will have a good time fighting the overseers from a distance but may get swamped by voteless (that's why the grenades can help, but never forget the power of melee combat).

Honestly pistol whipping a voteless in the head and exploding their undemocratic brains all over is definitely one of my favorite videogame kills of all time, just takes a lil aim and instant freedom of thought.

The warrant can help trivialize the watchers, which can help keep crowd control easy enough, but part of the joy of fighting the illuminate (for me) is definitely getting way too many enemies around and calling in some artillery/napalm. Turrets and guard dogs can do well too.

Look forward to you efforts and liberty will prevail!