Parry
I have noticed in some instances where there has been issue with parry I had this problem. When I try to parry the opponent does not get stunned and I know opponents that are stun immune when certain buffs are active like iceman's ice armor for example. It just shows Parry when the opponent hits and I block and it does nothing and if opponent has a stun immune node I would consider it as working as intended. I had this problem even with opponents like Voodoo and he is never stun immune and I had this issue during the last event quest and even other modes. I think issue related to blocking and parry needs to be looked into. If it is hard to parry at higher difficulties then it will be a problem. I hope it is only me facing this problem.