I slogged through Act 3 completionist style, bugs and all.
Oh boy!
There were gems: Raphael's finale,
Sarevok, jungle of Chult,
Shadowheart's finale, various buffs from allies made throughout the game.
There were trials:
Iron throne (excellent change of pace, once you figure it out!), Steelwatch foundry, Gortash, approach to Temple of Bhaal.
Torture: final battle(s)!!
Impossible decisions:
The guardian's final choice.
Stealth missions:
And after playing through, so many places can be shortened by stealth.
Let downs:
No Cloakwood. No Ulgoth's Beard. No Upper city.
Confusion: Couldn't find
hideout to progress main quest for hours of searching; answer was right there all along of course.
And bugs: forget save-scumming, I had to reload
Iron throne and jail-breaking Florick
anyway.
I tell you what, I won't go completionist in Act 3 again. Pick and choose and progress. I was absolutely laden down with legendary and very rare magic loot. My second choice items were in some ways better than first picks. Had no illithid powers but OP anyway. Nonetheless, final battle was tough!