Me likes Deathbringer
Swords and chainsaws are already cool, but Chainsaw Sword sounds like absolute overkill, and giving it a nice little name like ¨Bacon Cutter¨ really takes the cake.
Aside from the obvious Shantae stuff, I'd have to go with a personal little interest of mine....
Hands down the Chainsaw Sword
Arc Rise Fantasia had a chainsaw sword.
I remember that it was really effective against plant based creatures, haha.
That was a game with really neat weapon designs, they were always decorative and colorful, which I like.
ARF was a really pretty game overall.