How do twilight missions work anyway? I woke up early this morning and the twilight versions of the first two main missions were up. Had enough time to do the first one, which was surprisingly not that difficult (one dumb death to trash I blame on being half-asleep, boss only had one minor change so was easy) but then I had to go. No idea if the second one will still be up when I get home tonight or if I have to wait for some long rotation to cycle back to it.
My impression of twilight missions after doing that one was that you're better off just running straight to the boss. The loot I got from the trash and the various chests and bodies was all junk, including the mimic squirrel things and the loot goblins turtles.