Headshots should always for any weapon guarantee unconsciousness (for helmets) & low calibres, and instant-kill for high calibres without ballistic helmets.

This is definitely a problem. It seems like if you shoot a player in the torso they take the same damage as the head.

Same here. Can not refuel in official and unmodded community server.
Tried with cooking pot, bottle, jerry can. None of these work.
Fuel gauge was empty.

In T137858#1840389, @Lex wrote:

Often the level of different sounds sounds at a great distance, as well as near the sound source, almost with the same level. There seems to be no interference with the spread of sounds, such as - distance, thin walls made of wood or stone, thick walls made of wood or stone ...