Hordes
Parrying hordes should stun all enemies in a short radius with parry time split among those enemies, though a minimum guaranteed % of the original so 1-2 attacks can be performed with the parry window.
Multi-hit ranged
While parrying single-hit ranged attacks is fine, multi-hit attacks should knock the player away from the attacks zone if parried, since the next few hits wouldn’t be parried.
Misc idea:
Parrying is somewhat easy and that’s good, though for those looking for a more challenging parry I suggest some sort of way to activate a boon that halves parry window but increases parry stun by 10%.