To the End of Act 1 of Baldur's Gate 3

The game gives you a warning before you switch acts, something like "You are about to embark on a new part of your adventure. Make sure to tie up any loose ends". Afaict, even if you do choose to move on to the next act, you can still go back to the earlier areas and don't need to finish EVERY sidequest, but while I haven't checked I'm guessing all the characters who say "I'm leaving soon" will have left.

Anyway! If you haven't seen that warning yet, this post will likely have major spoilers, and you if you have, you're probably pretty safe reading this and all my earlier posts, except for any optional stuff you might not have encountered yet, and one (possibly optional?) level 5 quest I got partway through before deciding it was too hard for me, which I described in my previous post.

Masterpost

Content note: Bad things happening to slaves and animals.
( spoilers )