I finished the game once, have 2 co-op games running with friends, and just started a modded playthrough where the whole party is Artificers. I highly recommend giving some of the mods a try once you’ve played through vanilla. They’re super easy to install and add so much fun an variety.
ACT 2 SPOILER
I didn’t realize until talking with friends that you could win the abduction fight at the Harper camp in Act 2. If you don’t kill the baddies in time, the safe bubble collapses, and everyone in the Harper camp gets shadow cursed, and you have to fight your way through them. It’s genuinely heartbreaking and horrifying.