Hi, how are you? So... I finally updated the plugin you suggested. Now it's possible to configure up to 2 overlays on the enemy sprite, such as a helmet and a broken version of the same helmet. I improved the damage and hit chance logic. There's a video on the page showing everything from using the hitbox creation tool to gameplay with pieces of armor being destroyed.
I hope you like it, thank you for the suggestion and for all the support.