Not sure. It was pretty hairy clearing the sector with Herman and the Minefield, but I managed. Took 3 days to heal up and several grenades.
Then the Rust next to Ernie. Surprisingly easy, as I had a Gewehr98 now. I just laid flat on high ground ao they couldn't hit me, and they did me the favour of coming up one by one, if at all.
Then I went in the bunker below, and that was tricky. Survived by the skin of my teeth with grenades, run and gun and 2 unaimed headshots with my rifle (a little save scumming was involved). In the end one more guy popped up and luckily missed his shots, he was 3 tiles from me. I had 7 AP for one shot and i didn't miss.
It makes every sector a challenge, and i have to think about it in new ways. I like it so far. Bit worried about weapon mods, as i only have 30 mec. Hope it goes up from repairing things all the time, but not so far.
Gained agility already from running a lot during combat, and I've already gained 2 levels. Haven't even been in Ernie yet.