Season 2 pushed the level ceiling outward with the Kanturu continent and gave item hunting a second dimension: refining. It is remembered as the season that created the Jewel of Harmony economy and the Maya/Nightmare boss cycle that hardcore guilds farmed for years.
Kanturu arrived in stages — the relic ruins, the moss-covered core and finally the Refinery Tower. Its three-phase boss event against Maya's hands and the Nightmare remains one of the most distinctive endgame fights in the game.
Monsters in Kanturu drop the Jewel of Harmony, fuel for a brand-new refining system that adds bonus options on top of normal item level and excellent stats. Refined gear created a whole new tier of trading and gave old drops fresh value.
Alongside the headline content, Season 2 added new weapon and armor lines and a long list of system improvements — smoother party play, better item handling and the groundwork for the master-level systems that arrived a season later.