Depending on how your delegate works, whenever u take damage and the character run out of healt, u can call the Die method.
For a more complex ragdoll example, u can checkout github unreal tournament source code which is sometime complex but a very good learning source (see UTCharacter::StartRagdoll())
Can u show example of your delegate and how u use it?
I tend to write pretty much my entire game in C++ but use native/blueprint events to be able to implement and/or override events in blueprint, which might be usefull for prototyping/quick testing and allowing modding later on. There are only few places where im using delegates, but its been almost 6 month now i worked on the game, so it’s all a bit rusty 