Board Thread:Off Topic/@comment-24155619-20140114104537/@comment-24155619-20140114145954

BenRG wrote: I imagine that, at close range and against less-armoured foes like Beowolves, they're deadly. Against Giant-class Grimm though, they're useless.

FWIW, remember that the Giant Deathstalker shrugged off gunfire from Pyrrha, Ruby (a sniper rifle bullet at point-blank range!) and Nora (an explosive grenade!). The Giant Nevermore got hit with enough firepower to bring down a dozen normal Grimm but didn't even seem weakened. It's pretty clear that personal weapons, even a Hunter's enhanced weapons are pretty useless against giant Grimm. You need to spend time and use unusual tactics to wear them down.

Well by that logic, Ren technically took down a "Giant Class" as you called it, with his bare hands... that would explain him being exhausted before/during/after the fight with the deathstalker.