Hahahahaha!! That's kinda brutal!!
My first impression was, too bad I missed the fight! :) Maybe you can cut on action where the dino is falling down? But that might be too much. What's your story behind this?
Pose wise the kid feels pretty good. I would maybe get a stronger silhouette at the beginning. x1 his axe is in front of the body, with the screen right edge aligned kinda with the right edge of his arm. x99 and 105 have really strong posing, so I would make x93 a bit more dynamic as well.
After the slash on x115, it would be cool to feel more of an impact in his body. I think that the axe also comes off too softly. It would be cool for the axe to be stuck in the body a bit more, so when he pulls it out, the dino body gets pulled with it for a moment and then plumps down when the axe gets out.
In his last poses, like x191, I would angle the axe a bit more down vertically, so that it looks heavier. It might get trick with the silhouette, but after a big fight, and given his panting at the end, he should be more tired and not able to hold that axe so easily with one arm. Or, he's using the axe as a cane, with the blade on the ground and he's leaning on it for support. Maybe?