For example here https://youtu.be/jo6R6LqpNNY?t=254

Weapon-based VS fighting games (Samurai showdown?) certainly have the better striking movements, but it's harder to study a 20-frame animation : The double dragon case is 4 images, and it's interesting to see which 4 frames they chose (no wonder there's the concept of "key frames")

Thanks, do you happen to have a clip/gif of the animation I can check out?

It animates nicely, but it's a very short range attack (You may find it too awkward in an actual game), and the pickaxe doesn't seem to have much weight. A reference I often use for a weapon swing if the baseball bat from Double Dragon : the character leans his shoulders away from the weapon at all times in order to compensate for the moving center of gravity, it shows a lot of power.