Problem is I have to parry his first swing all the time to get it right. If I block it and go for the second there´s not enough stamina left for the riposte. And I´m usually dead in two swings..... Had him down to only one riposte left, but then I got to nervous and died ;)
Have been running the whole game with SL 13 (almost slayed Kalameet solo) so I really dont want to level up when i´m so close....
One thing I found that helped me was baiting his jumping attack (stay locked on and backpedal while positioning a rock between the two of you until you're far enough back that he'll do the jump attack) and, during his pre-jump animation (he ducks down a little bit if I remember correctly, its been awhile), running towards him then parrying. After that just run away.
If you're far enough away he'll normally try to jump at you right after doing his strafe jump.