Add rule to not allow tranqs in combat

[Floodify]

You made a suggestion like this and it got declined, by the way. I'll just paste in what I wrote at the time!

this is just impractical and almost renders the actual weapon useless, except for situations that occur once in a thousand times.

-support - nerf the weapon rather; make the severity based on stamina, so if you got a high stamina you will only get a bit dizzy at the first shot and then second a knockout (tranq then needs some reload time obviously).