When I heard the announcement of licking on a battery to check its charge I got the idea of sort of a "pain indication". Just like "hungry", "bleeding" "sick" and so on... I thought trough that idea a couple of times and got a few ideas: -if you lick on a battery that ist fully charged you get a little electric shock and the "pain" indicator is activated in your inventory on a low level (yellow) -if you break your legs you can still walk or hobble for a certain time But the longer you limp with broken legs the bigger will get your pain until you have to lay down on the ground. You can still make a splint out of some wooden sticks so you can walk or slightly limp again But it don't stop your pain. it can only be healed by eating pain killers or morphine. Otherwise it will take a long time to stop your pain. -if you get hit by a bullet or an axe or a zombie or any thing else it is almost the same thing. You can for example stop the bleeding with a bandage but without painlkillers you still got pain. -eating less and trying to unfetter from handcuffs can also cause pain -it could also be possible to introduce a new kind of painkillers (for example THC which could be connected with the possibility of collecting cannabis plants and craft joints with a piece of paper (you also need fire for example from a bonfire, matchstick or gas lamp)) -too much pain can cause slower running or a slightly blurred screen and away from a certain "strenght" it also could cause sickness -you could also use the alcohol tincture as a painkiller (at first strenghen but the lower the pain) in my opinion this idea is pretty cool so I just wanted to suggest this and to hear and read your thoughts on that :D