Kind of annoyed voice overs don't work with 5.1 sound in XCOM2.
I'm a little confused about Dark Events. Is there a Guerilla Mission for each Dark Event and you just, like, need to locate it? The whole "you must choose one" thing is confusing to me because you don't get multiple missions to choose from. I know enough to know that having a flying saucer hunting you is bad m'kay. But how do I find the Guerrilla Mission to prevent it?
Also a little disappointed at the voice selection. I appreciate they sound different based on the soldier's personality but....I'd prefer to have a couple Japanese, Russian and African voice overs instead.
CW beat me to the punch; once you have three regions, it's your pick. You can also rarely get to counter more than one by a certain hack reward that delays the Dark Events trigger by two weeks.
As for voices, fortunately there's mods. For a while, the Recent Mods section was like 90% voicepacks. For instance, my current run of EXALTCOM has, obviously, a bunch of EXALT voices and a dedicated combat hacker using the GLA Saboteur voice.
Honestly, DEs are kind of disappointing, because there's an Avatar Project Breakthrough in most of the picks, and that trumps everything else, since you can only actually set it back by a couple one-off actions, facility destruction is just damage control. And I personally find UFO Hunt to be quite a good event unless half your soldiers have been Seriously Wounded just a mission ago, it's an XP mine.