Cool idea, I wanted to do a low/no crafting run myself once I wrap up my current one. Was wondering if something like a psi monk would work for this purpose, with somewhat even spread in agi, dex, will, int and then fill out whatever is left. Decent combat gloves shouldn't be too hard to fight, but you can also go unarmed.
edit: Here's my rough outline for the build, but I'm extremely inexperienced with both psi and unarmed melee (specifically AP cutoff points) so I'd love some feedback -
http://underrail.info.tm/build/?GQMLCAYDCgUAHgDCh8KAwofCh2pEAAAAAAAAAMKHwocASQAATyQnHRQgBhITK0EHIVAWI didn't intend on taking Thought control at first but since I had so many leftover points I thought why not.
Couple ideas I'm toying with:
- Get Paranoia because the build is literally blind man mode
- look into bleed feats in case I decide to use fist weapons instead of unarmed
* Note that Feats aren't taken in leveling order, this is just a placeholder template for now
edit2: An alternative for OP if he wants to give it a try would be to drop CON to 3, raise PER (optionally drop another point from dex if you don't want to gobble down food), drop Con reliant feats and get Paranoia + Snooping.
edit3: Took the above build to lvl 12 on Normal, finished Camp Hathor and I have to say it feels really nice. Low PER stings a bit but you can use motion tracking goggles to compensate.