Boss got 7 for dmg so my defense negates. 

Boss Roll: 7
Retailiate roll: 16
Dmg roll: 7

Boss roll: 15
Attack roll: 16
Dmg roll: 8

Boss roll: 8
Attack roll:9
Dmg roll:9

24 dmg dealt + berseker rage 50%= total 36 dmg dealt.

Tell me if I'm doing anything wrong i think i nailed it. Proceeding to post.