Hello! Thank you for testing the game and for this thorough report!
Grenades, explosives, traps, chemicals weapons are scheluded. I just added some basic shooter mechanic with some weapons diversity for now, but shooting is one of the main features of the game, it will be expanded!
About AI, I had to tune it down when I added civilians to the map, there was some conflict with hostiles... Civillians were over reacting to shooting and I was working on other aspects of the game so I just prefered to tone it down and come back to it later.
After the first passes on Narration are done, I planned to do an another pass on AI, Weapons, Factions and if everything is smooth begin to work on skills.
To be exhausted doesn't prevent you to shoot, in fact. It prevents sprinting, jumping, rolling. And HP regen is directly tied to Stamina : at 0 you don't regen at all. To regain Stamina, you can sleep or eat/drink. Stamina is a long term statistic, it represents what one can do in a full day. It will be critical to manage it later in the game, when exploration is added and you'll be in the wild.
Thanks for your feedback, Invadererik. I will review all your bug findings and fix them for the next build!