Never Trust Anyone
That has proximity start.
Sadly, i didn’t bring up the map to see where i was at that time. But when recalling, i should be between Äso and Överbytorp. NW from Äso, SE from Överbytorp.
(Överbytorp - place where Never Trust Anyone takes place.)
Man, or rather madam, you are quick!! You make me feel so slow. 
Anyway, I’ll go ahead and put the data on the correct place, and see if I need more.
So if i understand correctly: Behind the curtain unlocks after finishing the four mission you listed above. Yes?
Yes. That is the case.
Also, there are prerequisite missions for The Enemy of my Enemy.
I’ll look if i can find them.
Edit:
After some gravedigging;
OK, good info. Maybe we can find out what mission that is.
Or it starts after Calle is finished about the secret weapons program. You were standing still when I popped.
Actually, i was making my way to the Ringfort, from Masskar, on foot. Sight-seeing and looking what changes there were in South Coast.
At some point, i heard Calle on the radio and i stopped once i heard it. While i was a bit late to hit record, subtitles show the full sentence. Also, when NPCs are talking via radio, i stand still, doing nothing, not to mask the speech with movement/weapon fire noise. (I have a plan with NPCs chatter. 
)
Of course, there are other, proximity start missions in the game. From our previous conversation:
Ow… 
I’m currently in the process of making a new topic. Once it’s ready, you all see what it is.
Starts by activating the “warboard” in the bear hotel wine cellar.
Proof here, at 18:10:
(Not my video, instead, i use it to type out NPC chatter since i didn’t record my Himfjäll gameplay.)
Aha Thanks, I add it right away. Btw that’s is a great video, seeing people who having fun, like I have in the game. Struggling with the bikes. I travelled to the strangest and seemingly impossible spots with the bike. I got very good at it.
Answering machine in the town of Boo.
(Not my vid but stumbled on it due to my NPC chatter topic. 
)
At 18:34:
Cool. However, there is so much changed in Boo. The red house in the video with the answering machine, isn’t there anymore. Now on that spot is a Kundsam. I guess, that the answering machine could be in there. But it could be in any of the houses. Only way to know for sure if that mission is played again in the changed world. Do answering machines disappear after listening, or do they stay, but no longer active?
This.
And i didn’t thought about map rework. 
Though, one way, albeit tedious, is to:
The answering machine is in the Kundsam, I found it. So it is on the same aprox. spot.
Hogging Supplies - read letter in house in Skogshult.
Stealing from the Poor - Listen to audio recording next to a soldier at 604, -318
I have been watching videos, and found most mission triggers. One still remains
? => In the Face of Adversity
In the Face of Adversity, could be some pickup in Måsskår, or maybe the warboard in the Ringfort, because Jenny is there.
