On normal outside a couple fights I didn't find Solasta THAT overly challenging myself (normal with manual tunes to enemies usingmore abilities and deadlier AI). I played the DLC too, enjoyed that though as well, it's more open. Without spoiling, there was a situation early on where I had pissed off a major faction, and they all ganged up on me -- we didn'T last long (in the late game I came back and took revenge, which was actually pretty close as one of my four characters was close to dying, and if one character dies, it's game over on this).
Admittedly, when making my parties for each, I rolled until I got at least one 18 for each character. Which is a bit "cheap" from myself. But then I'm typically totally min-maxing on IWD et all dumping CHA stats to kingdom come, so... I've still the (free) two-parts campaign to play they released for free as a demo for the dungeon maker back then. When I do, I will make characters either rolling but once. Or using the standard D&D array, which gives you a 16, 15, 14, 13, 12 and 11 to assign to the attributes.
I've seen the argument brought up that this is what the game's actually balanced for.
