[@Rockette]

 There is a cap, but since we are kinda vague on numbers, I dont have any hard limit set. Just know he won't be punching buildings alá superman or anything. ITs more, if he goes into a heap of enemies and they tear him down, he hits back harder and harder. He is also entirely meleé so his core archtype is gonna get wrecked by anything with range he fails to reach.

 Also, It implied it is closely related to how close he is to deaths door. Meaning any healing and such lessen his power. So basicly, to get the most out of it he has to gamble is very life. It doesn't help him soak any damage, so as you can imagine, he won't be anywhere close to peak potential unless he is all but on deaths door xD. I felt the need to incorporate the CORE into his abilities properly. Everything about Kain ties into the berserker archtype.