The one-handed Battle-Ax is, ar and on, the most versatile and most common weapon to appear during your average mission. It will crack a piece of armor effectively and cleave through flesh efficiently. Paired with either a shield or your favorite weapon to finish the job after removing their armor is a tried and true solution to gladiator problems by yours truly.  As for fun and efficiency but only showing up in the Crab Mission (Floor 3) where you unlock it or in custom matches after being unlocked the winner is, bar-and-none, the wolverine claws. Not only are you able to pick up any weapon you want while these are active, though the claws themselves will not extend should you hold a weapon, if you have an empty hand and hold the grip button you will unleash the wolverine. These claws are capable of cleaving flesh, ripping out hearts, destroying armor, and best of all, making your inner child absolutely squeal in glee.