Daggerhow do i change when my health bar starts flashing/blinking when low health?
if you mean the hp value at which your health flashes red, it's:
hudplayerhealth.res -> "HudPlayerHealth" -> HealthDeathWarning
if you're referring to when the low health animation triggers, mess with some hudanimations values under HudHealthDyingPulse. i don't know too much about what all the hudanimations values do, though, so that's pretty much all i can say