Comparisons to Buckshot Roulette are inevitable. It is same, but I do believe visuals and creepy setting differentiate it enough to succeed. Incorporating elements of horror into mini-golf was a great idea, with few missed opportunities, for instance chopping block should've been a blade. Spoken that the tone of the game is consistent and captivating. The one negative thought I've got was the velocity threshold for going into the hole, too many times my ball magically jumped over, when it should've fell. One suggestion - in order to have player pay attention to ammunition, you should give it out after successful round, in order to increase the tension and make each shot count a little more. Although that might not work with hostile NPCs.
All in all, great game.