You're probably trying for SUN Classic

SUN Classic includes epic content such as Story Dungeon, Mission Dungeon, Guild Dungeon, AC System, PK System and much more, which are built upon the long-term publishing experience of the initial version.

Additionally, SUN Classic offers a new beginning for players with many automated functions as well as comfort systems that provide a comfortable game experience as well with optimizations to Graphics, UI and UX. To know more about the major changes, watch the latest video on the webzEN official WEBZEN YouTube channel.

The initial launch of SUN Classic will first be available in four languages - Simplified or traditional Chinese, Japanese, Korean, and English to users in Taiwan, Japan, and South Korea. WEBZEN is planning to extend its service further to Southeast Asia and other regions.

To commemorate the launch of the global program to celebrate the launch, the SUN Classic team is running AC Launching Events including the Daily Check-In Event, the Level Up Event, and the AC Challenge Event before maintenance on April 7th.

It is the AC (Area Conquest) System is one of the core features that rewards players when they finish various missions. As opposed to the standard quest system, each action that players take will be rewarded and counted.

If you want to know more about Mmoexp SUN Classic Heim, please visit https://www.mmoexp.com/Sun-classic/Heim.html