found it!

i'd help definitely if i only knew how to make health bars :P

I guess you could use frames? And when the end frame is visible it triggers a death sequence, like: When tag actor:"enemy tag" collides with tag "player tag" modify: current frame -1(or 1, depends which way you make the frames go down) and make it relative to current value.

Use ratyu blueprint one

The humble if condition block

since every monster only deal 5 HP each, just make if statements and draw 20 frames. alotta work but it's 1 blueprint so why not