Hm, interesting. I’ve been trying it for another hour with the slightly advanced opponent ;), and can’t land a second hit. It’s always the same: I parry, during the “sword time” press attack, the hit lands and then I cannot do anything (controls basically do not react) for a pretty long time, it feels like a second or so, while the opponent is recovering. What is even worse, if I press attack again during this time when the controls do not react, Henry attacks right after the opponent has recovered, and this attack is 100% parried or dodged.
EDIT: I just watched the Alpha 0.4 live stream and Viktor attacks a few times after a successful parry, but always only lands one hit.