In PVP Gameplay, you are matched against other players' wrestlers to compete in asynchronous PvP global leaderboards. Earn medals with every match you win, and forfeit medals with every match you lose. The number of medals you have in an arena determines your place on the leaderboard, and your place on the leaderboard determines your rewards.
PVP Arenas are only open for limited times, and rewards for your place in the arena are distributed at the end of an arena. Most PVP Arenas require to you be Player Level 5 to enter.