ya you aint using them right, all ive been using for a while now, fully upgraded the kick can stun trolls 100% of the time, it can stun fuling serkers too but somtimes it take a second kick, but once their stunned you just kick them after their stu nanimation for a nice stun lock. the second claw attack does more stun dmg than the first one.

but ye your sleeping on the kick "If they had a secondary atack" they do and it's great

*edit* low stamina cost and high parry bonus, my buddy parries a lox and i just hit it like 8 times and still not running out of stamina