The best damage type in Underrail is energy. But the only thing that can deal a fuck ton of it is the Fusion Cannon, Temporal Distortion stacking, Plasma Beam, or a Plasma Pistol. I've seen meme dex versatility builds that make the Laser Pistol into a fucking machine gun, but it's not up to my taste. Cold is the second best and would be first if the Cyroliquid Pistol dealt just it. Acid and Lightning would be higher if there weren't enemies with full resistance to it. Their debilitating effects are far more worth it than the damage though and cold can freeze most enemies so it takes the crown there.

I feel the need to create the perfect all arounder. I've done most melee weapons, most guns, a psion, an arbalist, and a Heavy Weapons spammer. The closest I've come to that is a dedicated war crimes build.

I'm thinking of having a plasma in one and a chemical in the other. Feats are more or less the same. No psi because psi dipping is cancer and for faggots. Seems like it'll start a bit spread out if I try to do both at once but eh.