So I played through the small campaign piece available in the EA-access and I really enjoyed it. I played it through on the hardest difficulty and it was a fun and challenging experience. Maybe even a bit too challenging where it wasn't needed.
I found my self try and use stealth a lot to try and complete the missions, something that proved difficult due to how the AI seemed to work.
If a AI spotted me (the little diamond above their head turn fully red) there where no way I could stop them from attacking me, which seems obvious right? BUT, let me explain. In some ocations it wasn't possible for them not to notice me in order to performe a stealth takedown and even if I managed to take them out before they shouted or even propperly reacted to my existence every enemy instantly got alerted and opened fire on me.
So, if an AI spot you but you manage to take them down quietly before they have the chance to alert any other AI, eg. screaming, shouting, etc, all other AI still gets alerted.
Just a small issue that annoyed me because I didn't make sounds and all the AI that spotted me did was "chipping for breath" (? direct translation from Swedish) quickly in a small bit of panic before I took him down, no sounds made and still every AI got alerted.