I started playing this again after a while, awesome as I remembered, although I began a new game with lower difficulty (the 2nd of the list) so that I could reach the point I left faster before switching back (about August or so). However, as a complete surprise I stumbled upon a craft filled with goddamn Armored Zombies. They had good gear and protection but thankfully they can't shoot for shit. I checked if it was possible to defeat them with enough application of blunt trauma, but the most I managed to do was to stun one and steal his stuff before being forced into a tactical retreat.
I checked the save just for terms of curiosity.
That's close to
impossible to do without save-scumming. Those armored Z-Troopers have so much armor that they shrug off all of your damage caused even by high-roll rusty niner shots.
Even if you break past the initial health-pool the zombie would just lose his arm and turn into a
melee threat with similiar large healthpool and armor and oneshot every gal he can reach.
Funny thing, the ship the zombies got is a smuggler ship! If you would manage to win this by a miracle you might find extremely valuable guns or armor-suits in the crates randomly generated inside the craft.
Without save-scumming and luck, that's a tough nut to crack with such limited resources and lack of damage.