Player Battles

The battle "Player vs. Player" (or just "PvP") is the core aspect of the game.
Battling other players has to be unlocked through the quest Conquer Scrapton Arena. Then one can use "Quick Match" (QM) by pressing the crossed red swords at the top navigation bar.
PvP battles can as well be started by visting the local arenas or by going to the Player List and selecting and manually challenging other players.
Only QM battles change (give/deduct) Rating or count for certain Achievements, since players matched up this way are at about the same Strength, so that battles are (more or less) fair.