Nothing fancy, pure combat build since I always wanted to try two-handed swords
I liked scimitar (used iron/steel/blue for the majority of the game), good damage against both soft and hard targets, can cross attack (especially good for whirlwinds), bleed and counterattacks are good too. But I would say it makes sense only if you go for 12 AP - this way you can do one move and two fast attacks or two aimed attacks. If you go for "just" 11 AP you already lose a lot of damage output which makes other swords like handar more viable.
Didn't like unique 2H swords though. Chopper has the same damage as blue scimitar but no CS or THC bonuses. 130% hardness is a dubious advantage so in my opinion even steel scimitar is better. Qantari sword has the same damage as steel scimitar but once again no CS or THC bonuses. While 20% counterattack bonus is interesting, its damage output against hard targets is simply inferior; moreso, scimitar has 5% counterattack bonus too. So its defaults to hand crafted scimitars all the way
The big selling point of scimitar with high crit is ability to do two high damage arm attacks per turn. Makes most of the enemies harmless. Except...
Stress test against Agatoth shows utter failure with 1-5 score. Old tactic of neurostim - bola to the head - arm hacking doesn't work well enough.
In theory, this build should perform similarly to crit-dagger-dodge, which was a solid performer against Artificer, but it turns out exactly the opposite.
It is because dagger attacks are quicker and a single turn allows you to do two times more arm attacks, with higher THC and CS chances, each of which ruins his attack rating and stats. So I could neuter him in the first two turns and then just farm crit damage with torso strikes. With scimitar, it's two attacks max which is just not enough to keep him at bay. And sucks if you miss, so it's only arm hacking to keep the debuffs on