Low hp effects scriptby
This is a script i wrote when i decided to add more difficulty when player is shot or hp is low. This script adds black and white screen effect (like in Dayz) with a slight brightness when player's hp is low and adds a camera shake, both of which turn back to normal as player gains hp.
Dynamic black and white ppeffect. lower the hp, more black and white it will be (also adding slight brightness to make player panic), higher hp will turn back to normal color.
Dynamic camera shake same as above.
Copy hp_effects.sqf in your mission folder
add these to your init.sqf:
0 =  execvm "hp_effects.sqf";
No cam shake when in third person
Mp is not tested.