This mod, as the short description states, changes Isaac into this Pumpkin Guy I made, who starts with the Guillotine. Not everything is changed, and a few items make the head or body go back to Isaac's, but, for a first attempt, I think it turned out alright.
How to install.
Step 1: download and extract the contents of the .zip
Step 2: put the contents of the .zip file in the resources folder (location on Windows PCs is C:\Program Files (x86)\Steam\SteamApps\common\The Binding of Isaac Rebirth\resources)
Step 3: Play with it as you please.