This is an amazing game! Though may I suggest some improvements/suggestions:
-Improve the AI's ability in counting shells, it seems the AI doesnt count the shells very well as on rounds where theres obviously a live round left, it will shoot itself.
-Improve the Turns, right now if the round ends on the player emptying the shotgun, the player will start with the shotgun the next round, when it should be the AI's turn.
-If possible, a Multiplayer. This game would bne great for it!