So, stealth seems broken. All padded armor, moving around crouched at night with all the books and a point in From The Shadows but I can't through a single room in a tier 2 POI without disturbing zombies.
I was doing fine stealthing through Tier 2 quests with 2 points spent on From the Shadows, padded armor, bow kills, difficulty nomad, feral sense: all. I'm not sure how it would be with stealth melee kills where you must get close.
At Tier 3, with 3 points in From the Shadows, padded armor, night vision, bow kills, around game stage 100, difficulty nomad, feral sense: all, stealth is working around 50% of the time, mostly failing at close range. I've not acquired any armor mods to enhance stealth yet. At this point they may have assumed only Agility specialists were stealthing, but I tend to spread my points around all the areas, so I'm not as far along as somebody who focuses on agility would be.
This I guess is the ultimate question. Is stealth broken or are we making choices that are putting us behind the curve? I assume in my case, I'm just a bit behind the curve or maybe with the curve but with feral sense all making it extra challenging.