@Prince of Seraphs Sorry to intercede once more, I'm just heavily knowledgeable of the fallout series. In regards to V.A.T.S., it stands for Vault-Tec Assisted Targeting System. It is a function of the pip-boy which calculates your chances of successfully hitting a specific body part with projectile weapons, or of hitting the person in general using a melee weapon or throwables such as grenades or molotovs. It doesn't really make you auto hit, just lets you see where your best chances are, and lets you pick the perfect opportunity. In 3 and NV this stops time, though canonically it does not, as shown in Fallout 4.
The durability of the player character is proven in the beginning of the game, where the character is shot in the head and buried, only to be dug up by a robot later and brought to a doctor to be fixed up. That said, when you're actually playing you could conceivably be shot in the head five times and only suffer health loss and brain damage, which is healable via stimpak or doctor's bag.
As for the crafting, the PC can use reloading benches to combine lead, ammo casings/shells, primers, and gunpowder to create bullets. Other objects can also be created at similar benches, such as various grenades, certain upgraded weapons, ammo breakdown/conversion. They are also able to cook a fair amount of things over a fire. All of this is dependent on various skills and the player's investments in them.
In Fallout New Vegas the PC is given the 3000A model.
Also, I've sent you my idea via pm.