The craftsmen of Yharnam sure knew their business. The latest "Video Game/Movie Weapons IRL" video from Man At Arms ends on a fantasy weapon that I'd aaaaactually kinda sorta like to own. Their team has forged Bloodborne's Saw Cleaver, probably the most iconic of the trick weapons in the game.
It may be a starter weapon, but the Saw Cleaver is far from simple, mainly because it has to convert between a short and long form. I wonder if it makes that amazing sound effect every time you snap it out? Probably not.
Here's a gif of a guy in backless chainmail using it to slice off a zombie's face: