I designed time ago a dwarf halberd hammer-axe, although it still needs textures. I don't know about textures, so, that's a personal task for everyone who gets the file to custome the item in own taste.
If anyone want to add the textures and/or use it for a fantasy submod, feel free to do it, but i'm not gonna add them, simply bc i don't know how to do it, anyways, if you do that, it would be nice to have mention in the credits for the original work. The downloadble below it's an .obj file.
This is the sketch (see spoiler), based in a combination from Dain's hammer, the Balin's sword & Gimli's axe:
Credits:
Garnash (conceptual art)
PC_Toby (3D edition)
PS: I designed other dwarf weapons, you can watch the concept ideas here