It would be cool if there was an enemy similar to the black knight from monty pythons holy grail; as in you can continue to cut off their limbs, but they will continue to fight.
That would be hilarious, even just an enemy who changes animations as they lose pieces would be quite funny.
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Improved the head chopping effect,

This is probably going to be reserved for when you crit and insta kill an opponent.
The normal effect is going to be used as a health gauge for enemies so to speak, I'll make a gif of the more complete effect in a bit.