Enemy stunning with a kick has no visual cue, which means you can't really tell that the kick you did indeed stunned the enemy. Maybe little stars over their head and forcing them to play the idle animation (or a new stunned animation, but that would require more work, so an easier workaround might be better for now) and cancel their attack animation would help. Currently when kicking enemies they get stunned but keep playing their attack animation (despite doing no damage) and everything which sadly makes it quite hard to tell the kicking even works, visually speaking.
Also if you kick while having no weapon equipped... on the earlier version it had no animation, but now it has an animation... but for some reason it shows that you have a gun on your offhand instead of no weapon at all. It would be nice if instead there it was a new animation for kicking with no weapon.