I am replaying this at the moment, just as a trip down memory lane. Still great fun.
I never got far with this replay in 2015, but I am replaying it again now and having a lot of fun with it. I'm now almost at the point of becoming the Divine One and getting to the endgame slog. I would like to finish it properly just once, and as a step-up to playing the rest of the series (except Beyond, fuck that).
I read a few things about how the GOG version supposedly reintroduces bugs that were already eliminated in 1.34, due to Larian losing the code or something. But on the other hand 1.34 has issues that have supposedly been patched out in later versions, so apparently there is no ideal version. In any case, I own an old retail version on CD, so I just fired that up with 1.34, since that's how I played it as a teenager. I don't know if the stories about needing to use a Hex editor to fix game-breaking shit in the GOG version are true, but I know for a fact that the patched retail version doesn't have any problem like this.
It does however have a few quest-breaking bugs, especially with Tingalf, where one quest will remain unfinished in the journal unless you follow a specific chain of events. I read somewhere that I should talk to Trevor first to get the quest from him before finishing up the black market, but apparently this is also wrong because one quest still remains. Very annoying but not game-breaking.
I also finished the Dwarven Councillor quest before even visiting the Elven village, meaning that I never properly get the Elven quest to resolve the conflict between them. Instead I go to the Elven village and my future
Elven waifu doesn't introduce herself to me, but just thanks me for solving the problem without any journal entry or experience. I just straight up get the option to try to kiss her and then she tells me to go get her necklace so we can have hot interracial sex. Too bad. Immershun, ruined! Not sure if the GOG version fixes this or the Tingalf quests. I also killed the talking tree with the poisonous tea before I got the quest from Medicus to get the root. Oops!
I picked the Survivor class this time, under the mistaken impression that he gets more skill points, but actually it would have been better to just pick the Warrior and take on Survivor skills as necessary. Still, the combat isn't that hard, especially against all the trash mobs, and since I went with archery, it becomes even easier. I found a "Fierce Bow of Hunting" somewhere in the early mid-game which deals 40-177 base damage and is fast as hell. It's even better than the Bow of Hilfin that I get from the Elven bowyer in the Dark Forest much later. The only difference is that the Bow of Hilfin has 5 Charm slots, whereas the Fierce Bow of Hunting has none. I'm not sure if Hilfin will ever be better, even if I fill it up with Strength/Agility/Offence/Defence charms. Not sure how the damage with bows is calculated in that case. But as mentioned, combat is pretty easy already now.
In this game I think I've been a bit more lucky with some item drops, as the equipment and charms already put all my resistances >75 by the time I got to the Dark Forest, and one or two already >90. I remember in the past I'd get to the desert and I'd still be trying to raise resistances, but now they're almost all maxed out already.
Of course as everyone who's played it knows, DivDiv has great music, atmosphere and humour. The creatures don't respawn, which I think is somewhat preferable, as levelling is already very easy. However, it does mean you're basically just "clearing out" areas, wiping out all the mobs, and then walking through empty landscapes if you ever need to backtrack. Most dungeons are pretty uninspired, just being long crawls filled with enemies, without many inventive solutions or puzzles. However, they are mainly at the beginning and at the end, with a largely optional one in the mid-game.
Side quests have some mild C&C, but nothing too much. You can be Robin Hood and help the poor townsfolk, or you can betray the cattle rustler just trying to feed his family. But usually you can just do things like settle someone's debt for him, and this works fine. The game's economy is totally broken and you'll never lack for money, although you might want to save as much as possible just to be able to buy yet more charms to become even more OP.