but they serve their purpose.

What purpose is that?

Restricting some things to be only unlocked after doing more or less time intense playing, whereas the actual achievements are kind of dumb, yes, but they serve the purpose well by distributing the unlocks over a varied field of activities in the game.

Some numbers are simply off, for I can't imagine it is intended to gate something behind 50h gameplay and so on, but this game is far from being finished, so that's that.

Like, self flagellation, a very powerful perk for crusader and assassin, and maybe also for psyker (idk yet, has only recently been fixed for psyker) requires 5k fate, which requires basically to play through the whole campaign twice, which is a lengthy task but quite natural in this game as you may want to do that anyway due to seeing the story with both decision (puritan/radical) or simply leveling up more than 1 class.

On the other hand, using 250 innoculators or opening 100 chests ... well... as I said, they could  have made worse choices here.

Why I do complain about the suppression skill tree though?

Because it is actually broken, and requires far more effort and partially exploiting the mission spawn system or grinding the campaign 5 times, due to recent changes where the impact for this unlock was apparently not anticipated.

One more thing to note here that is actually important, is how this should play out in the actual gameplay and how it does not do that:
- default skill trees for sub classes are not diverse enough, especially not for psykers
- it may be a good idea to have more customization, and instead of having fixed default skill trees for sub classes, have a list of available skill trees from that you can chose a few, per sub class
...you (knowing the game a bit) should not be limited in the selection of your first char because it's the only sub class that has a certain necessary skill tree that needs 20h play time or so to unlock

A similar issue that was fixed and broken again, is the psyker sub classes in general,
non-empyrians used to get bio lightning only at lvl 12 or so, and were partly unplayably weak with what they got at the start.
Now they are all valid (have not tested scryer a lot though), and you may note that all get bio lightning at the latest at lvl 5.
But the problem re-occured in another form by making buffs more use-able and the aetherwalker having thereby the only one relevant perk, which is not attainable at all by the other psykers, so you are basically forced to play aetherwalker, except you know you will go full warp heat build and stay with that forever.
(I only realized that at lvl 34 on my empyrian, but no biggie as I was going to play the campaign at least twice anyways.)

Even though I took a few side missions from my 3rd and 4th campaign play through, being about half done with those 2 chars each.

Things to take from here, with a little addition of my experience:

- there are only a few planets that can spawn tropospheric maps, but they spawn regularily there
- you can accept and abort missions constantly at those planets to make those spawn that you're looking for
(though sometimes planets "run dry" on missions, no problem, there are at least 3 of those planets)
- the one tropospheric map mentioned here with a pic gives 1 side mission (guardsmen)
- there is another tropospheric map, a rather huge map in roughly recangular shape, that contains TWO SIDE MISSIONS (!)
one psyker/gate and one gurdsmen side mission
- other tropospheric maps do not seem to have any side mission, neither have I seen any other types of maps that have them,
so it's safe to say: skip all except these two maps
- if in doubt, make a pic of a tropospheric map for later reference, try it, and if it did not have a side mission, it will not have one ever
- it still takes a long time, but it probably is faster than doing the campaign to get side mission counts

Thanks for all the info shared here!
It did help. :-)

Finding that map though is a pain, I looked through ALL sites in ALL systems three times and found ONE.

There is actually no point in "traversing" the "systems", what would I give for at least a list of all available missions to select from,
this whole design is so extremely pointless. -.-

I also sat on a certain planet that can spawn these and "re-rolled" the missions there for quite a while by accepting and exiting missions, and the chance to spawn tropospheric missions was surprisingly low, not to say that off these, the chance to get the right one is abysmal.

All in all extremely frustrating. -.-

Anyone knows when they are going to roll out a new patch?
I would have expected that long ago already, there are just so many things broken it's not even funny anymore.

And there is BY ALL MEANS NO REASON to remove tech shrines as side quest! -.-
There could still be a side quest to activate all 3... I mean... why not?

I remember finding guardsmen on tropospheric missions on 2 different spots, one was where you said, the other was near a rather big, central map  piece with 3 or 4 ways leading to and from it.

This is so sad, please fix! o.o

which is a ridiculously tedious task, and perfectly shows how broken this whole "mission system" is,
and that you need to click on a mission to see the map-type, does not help either.

I did all tropospherical maps, which were only a handful in all systems combined, a few hunts, 2 exterminations and one with warp gates, several of them had this key-hole map piece but none had a guardsmen side mission. -.-

I do remember saving guardsmen on such a map, but I do not remember if that was back in alpha only.

Any help (or fixing this issue alltogether) would be highly appreciated!

I'll try to find those maps and test it myself.