So i heard from a friend that you can upgrade your hells retriever, but i havent had the chance to try it since it's testing week at school anyways, he said once you have your axe, throw at at the ground somewhere by the first dog head thingy. itt will look like a red portal on the floor over the railing. throw it in and it will dissapear. then, go to afterlife mode and hold X on the hells retriever and it will be blue and deal more damage as well as having a longer range the more you hold it down (LB). Please tell me if this works because i myself have no time to try it. Thx!!!