More of a general design suggestion than balance per se, but the Adrenaline bar depletes too fast, you have to be constantly hitting your opponent for a while to see it turn red. If the idea is that the player really has to fight hard for it, maybe it's ok, but the way it is set up I don't think most people will even see that bar fill up.

I dunno where to put this idea in relation to the character, so I'll post it here.

What if the "adrenaline" trait behaves similarly to how Lucario's Aura or Sephiroth's revenge mechanic does in Smash Bro's Ultimate. Having it activate at set levels of damage percentage inflicted/received could provide an alternative to the playstyle currently set.
Ex:"25%, 50%, 75%, 100%."
To elaborate, 25% makes a small increase to speed and damage, where as 100% has it become the fully powered "adrenaline" mode that's currently set in place.