IN A NUTSHELL, EVERYTHING! Here's some details:
Collect apparel boxes to unlock over 1,000+ different clothing and weapons.
The moment you join the server you're ready for combat, Choose a class and join the fight!
Gaining exp will be from slaying other players in battle, No more hunting monsters for hours! Just fight and rank up!
After reaching a certain level, players can to prestige and reset their level to get exclusive rewards based on the prestige level.
All and every class has been looked into, edited, balanced and fixed for player vs player game mode.