@Larva
Not sure what this game is, but in my opinion they have done a really good job with their skins. Ofc it would be important that the skin makes the Axe look bigger to give an impression that its a really heavy weapon that is hards to swing, but once you get it into swing it will tear everything apart lol
Even an enhanced version of "Twin Chakran" could look something like this
https://www.phantasystaronline.net/forum/index.php?/wiki/item&id=003600
And ofc.. Rhita:
Edit: Since berseker Axe how about double saber attack animation? That way it will give the impression the user got into a crazy rage just like the real viking berserk mode histories. I have seen this attack animation working on katana, not sure it that can be done on an axe tho.