I have this via GoG, it's pretty awesome, but I am not sure if I have run into a bug or just the nature of the game is failed quests. My guys are level 3, and they have to fight literally 50+ enemy NPCs of all classes plus a few Fiendish monsters, and it seems like that fight just shouldn't occur that early. I may try to tweak the options some, I'm playing on normal, normal crits, normal enemy abilities and hp, etc. but literally the screen is filled with enemy trash soldiers and a few giant monsters, and my intro party can't stop them from killing the friendly npcs and stay alive. Annoying, it's about 6 hours in to the game too.
This is the first battle that seems either bugged or just showing up way too early. Also, I have around 8 quests that have to be done 'in this chapter or they fail' so... hrm. That said, the character creation system is amazing, although it seems like the enemies demand perfect tanks and perfect ranged/magic users way back out of the way to defeat. Hybrids and hybrid-ish classes seem to be an utter joke, at least at this low level. I'm going to remake my main pc as a tower shield tank and see if it's at least possible to distract the mass enemies or something.