I didn't have any problem reading the colored blur as the axe in motion- I think Link's sword swing is this way, right? That'd probably be a good reference for how Nintendo makes the motion blur of an attack work.
Also, it seems strange to me that the Iron Knuckle is swinging his head around with his attack. Like, usually when you swing a sword or baseball bat or whatever you look at what you're trying to hit, you don't just follow the end of the bald with your eyes. I think when Link attacks, he keeps his head forward in the direction he's attacking, right?
Anyway, overall this dude looks sweet, great job guys! Also, have we considered how the armor falling off will work? Is it like, every hit/magnetic glove use a piece falls off, which would probably be a lot of animations or piecing the enemy together from different objects or something, or are we gonna do like Majora's mask, where each hit you see an animation of some armor getting destroyed, but it all falls off at once, or in two stages? Probably good to lock that down, it looked like there were four or five armor stages back a while ago.