Brutally well-made game, if he adds multiplayer, something to do with the earned money, skins on the table and the shotgun it will be complete banger and most played indie game of the year. Only negative thing is that you are always first on the start of the 3 rounds and with handcuffs it becomes too easy to win, maybe add a mechanic to decide who goes first like coinflipping or something else.
Edit: Please find a way to make it not have to restart the game after each round you play.