Tearing my hair at difficulty

[SakuyaFM]

I'm just really frustrated at this game. I'm playing as smart as I can, but it feels like the enemies have near perfect aim while my guy is just eating up ammo without any hits.

Currently using Blue Sun mod, "arbitrary" difficulty with no crits | low energy | eagerness | quick repair | show hit | last enemy

It took me more than an hour to finish the Army Base (accepted Cyrus Lond's mission), and now, even at lowest speed, I keep getting ambushed by 10 soldiers.

What are the optimal difficulty settings?