When you get the arm cut off you die however it would be better to have to lose both arms (like legs) to die. To fight you could punch with the remaining arm. this could also work if a feature was added to put all weapons away, or with mu other idea, throwing weapons. The punch could be a attack that can't be blocked and you block with that would do low damage per hit/swing but would swing/hit very fast. side movment would throw hooks and regular would go straight like a pisyon.