Lost Dimension
 

One could ask why am I bringing up a PS Vita game with horrible graphics from ZXSpectrum/Commodore64 (okay, i'm exaggerating but not much).

It'll be ported to PC later this year. Features:
Whatever, it's not the reason I'm posting. I mean, if a traitor is random, there can't be an arsekicking story behind it.
The reason that poked my eye is developers promise:
http://www.dsogaming.com/news/japane…ter-this-year/
Need old phones' trailer with gameplay? Sure:

You know that might actually be fun combat. I don't know about Mr. "Did I mention there's a traitor among you?" though - could make it hard to get all the way through.

I played it in my PS4 (or was it PS3?) about a year or so ago… not that good. The combat was tactically good enough, but outside combat the game is severely lacking. Basically you are in some room, you talk to each companion, IIRC if you pick the right traitor you get some bonus, then next level repeat (with one less companion), until the end with the remaining 2 companions or something like that.