If you receive damage more than 30 points you will bleed slowly.
Bleed Damage health = Damage Received * 00.2 per second
you can use a bandage to stop bleeding,but will not restore health.
bandage can be crafted on a workbench,Craft required.(but I have put the esm in the pack anyway)

What's more,I did not edit any weapon,just add a quest and a script,so may be it's not fun as this one,but better compatibility are expected
http://www.nexusmods.com/fallout3/mods/3013
other mods will not have much effect on mine , and vice versa


---------------Credits--------------
Craft
http://www.nexusmods.com/fallout3/mods/4447