The jumpjet troopers are the worst. Gotta get them while they're far away or shoot them out of the sky or they'll just blow up in your face.

Earlier I shot one midair.
Then it fell on top of me, the torso (jump pack) took fall damage, and exploded-- killing me instantly
lmao

They suck but IMHO not as much as bile spewer spam

Impact Nades will one-shot bile spewers, and are powerful enough to one-shot groups but you can only carry 4 (6 with +grenade armor).

Grenade Launcher or Autocannon will tear right through them as they do explosive damage. 2-3 shots each.

Slugger shotgun is also good: hits hard enough to stun them when shooting their face and has enough penetration to damage through their head plates. Slug-on! Apply directly to forehead! (Commercial disclaimer voice: Product only good against 1-2 bile spewers at a time. if you're experiencing a bile or nursing spewer breakout please contact a Democracy professional immediately)

"DYNAMIC ENTRY!!" >:D