I think I should ask over how severely did Aemoten actually hit and where exactly, just in case... (Since it turns out I managed to unintentionally omit some details I shouldn't, and only caught up on it when my character was described hitting the yth in a manner he should not have been able to according to my mental depiction of the scene.) - In my mind he swung the sword pretty much with all of his might, unhindered, from right upper corner (nearing the front of the yth) to lower left, and the sword he uses is both heavy and extremely sharp (I would have expected it to at least cut to the bone of the uppermost right arm, given that that arm would be the first thing in the way and not the creature's neck; I imagined him more or less swinging as if he wanted to cut the beast - or its neck, more precisely - diagonally in half, and being very close to the creature by the time the blade makes contact). I don't care much whether we go with what I actually had in mind or how you interpreted the post - mostly I just can't figure out where would the sword end up compared to Aemoten and the yth itself and how successful would the creature be in hitting back (with Aemoten initially being at notably less than the yth's arms' length and more towards the back than front if the yth by it's right side if to go by mental image)...

(I should really just remember to describe what he's doing with his sword more accurately... Edit: Or how close he is to what he is attacking, now that I think of it. It is more a matter of distance in the given case than anything else.)