Land of Legends
Gladiators may use any weapon, but in the land of legends classic gladiators use bare fists and feet or hand held blades for grim bloody contests of endurance and skill. Blades, axes, and other various weapons usually result in fights that are simply to short for interesting arena games, so the solution was to base everything around bare hands and then augment them with spikes and other short piercing bits to make things bloodier. It is not unheard of for two gladiators to be covered in blood before someone passes out due to blood loss.
Champion gladiators know how to put on a show and survive doing it. Failed gladiators simply die.