zen VS ACE3

https://ace3.acemod.org/ – Check that out and you'll see tactical shooters. I don't know if it's actively played anymore but years ago on A2 it was immersive to the point of PTSD. (thats hyperbole)

Now this returns: *["ACE_MainActions","PackWeapon"]*Which is correct according to the Git Documentation

It doesn't. ACE medical has had a bug since the medical update where any vest that uses a passThrough value of less than 0.2 in the hitpoints config causes units to take almost no damage. This affects certain vanilla vests as well.

ace is a widely used overhaul of the game. It's better if you just read up on this: https://ace3.acemod.org/

Lol I don't think you're going to find that in Arma. ACE medical makes things more realistic, not less. Here's a brief guide on the basic and advanced medical system, it's a bit outdated at this point but still gives you a good overview of how it works: https://github.com/acemod/ACE3/blob/v3.12.6/docs/wiki/feature/medical-system.md

Use this domain instead

ACE medical issue. Ever since they did their big medical system rewrite, it doesn't like vests that have a hitpoint passThrough value of 0.1 or lower. Vanilla content is affected as well, it's just not as noticeable because only a couple of vests use that value.