When facing early soldiers and operators, I’ve usually taken to kiting them into metal wreckage and dancing around until they shred themselves to death, then smashing the corpse buried under the rubble. You lose out on the loot until you can find or make a shovel, but it’s much safer than trying to punch through that armor with a stone spear. If you can lead them back to the missile silos, the turrets could take care of the problem for you (if you’re careful and know the turret range), but don’t expect to be able to smash the corpses afterwards unless you have a desire for a dance with high-velocity lead.
