Originally Posted by BiggD
Yeah, I was having this problem earlier today. I don't know how to word it without giving a hint away that something happens. I don't know, I might just leave it the way it is
(This is assuming that the near end mission titles don't contain spoilers themselves) Maybe separate them into "Finish these achievements before starting X mission" or "Once you get mission X, do these achievements before you continue" then have the "Pick option C" achievements.
I can see how it's hard to word, but even as it is worded now, the reader probably thinks something has to happen anyways or they wouldn't have to pick option C to avoid missing anything.