PRO AXE jungler

Pretty basic build, but try to rush Blink Dagger, since it makes your ganking way easier way more effective. Also max Counter Helix first.

shouldn't a jungle axe max helix?

Not really,I think this is more prone to gank with battle hunger.

Not much of a "ganking" ability....

Yeah, Battle Hunger isn't a ganking ability. Harassing ability, yeshttp://www.dotafire.com/dota-2/hero/-4

nothing wrong with this build.. battle hunger is a GREAT skill for ganking.. ganking is an early game role. mid - late game (when you have a dagger) it is no longer ganking, but rather initiating - ganking is a laning phase term to give your team lane control/farm. Obv late game you gank - but it tends to a be a team gank, resulting in a clash..

Soul Ring is a very good item for this build with the tranq boots should be enough to tank the neuts, and allow you to gank regularly - you can grab the vang after that.