Thumbs
The brotherhood is all like stabbing evildoers with their thumbs, and the one guy is like it's such an honor to meet you because you only stab old people with your thumb when they're ready, and all the old people are like put on some music dear before you thumb-stab me ok I'm ready now sweety. Seriously? Why not just hire a mugger to stab you.
The end was really depressing because I knew a sharp thumb wasn't going to improve that kids face any when fangs just might have. Besides I think that cave was downstream from a bath-salts factory and the backstory was just the hallucination of a bunch of beach bums.
10/10