This is if you're using another mod that edits metapeds.ymt,edit that one with notepad/notepad++ and replace all lines containing

<UNK_MEMBER_0xA5229965 value="true"/> with <UNK_MEMBER_0xA5229965 value="false"/> for the visual damage

Replace all lines containing either <UNK_MEMBER_0x895861DA>0xFF645A9F</UNK_MEMBER_0x895861DA> or <UNK_MEMBER_0x895861DA>STANDARD_PED_KID_DAMAGE</UNK_MEMBER_0x895861DA> 
with <UNK_MEMBER_0x895861DA>STANDARD_PED_DAMAGE</UNK_MEMBER_0x895861DA> for bleed outs to have a chance of happening