How do you defeat the hunter in Kya Dark Lineage

The hunter will throw 2 types of bomb..the first is a explosive one with a 7 second fuse after he throws it run up and move itwith your feet fowards him and kick the bomb into the Skull's mouth which the Hunter is on...after a few times he falls off the front holding on..race to him ad use Kya's boomarang on him...after a bit that skull will amit a flame breathe...you need to kick it into the mouth before it breathes fire then jump off the sides riding the up draft around to the back of the plateform.. do it enough..the skull explodes sending the hunter downwards