1. The starting NPC Karukia Prefect is located on the first floor of the Hall of Kings in the Orc Village. Talk to Karukia to start the quest.

2. Teleport from Orc Village to Immortal Plateau — North. Find and kill monsters:

Goblin Tomb Raider Leader Lv. 12

Until the quest monster appears:

Kuruka Ratman Leader Quest Monster Lv. 18

Kill quest monsters until you collect Kuruka Ratman Tooth NG x 10

3. Return to Karukia Prefect and talk to her.

Karukia will give:

Betrayer's Report NG
Betrayer's Report NG

4. Teleport to Gludin Village. Find Kasman Prefect in the Orc Guild and talk to him.

5. Teleport to Dark Elf Village, then to Spider Nest. Head west towards the mountains. Find and kill monsters:

Umbar Orc Quest Monster Lv. 20

Until you collect Head of Betrayer NG x 2

6. Return to Kasman Prefect and talk to him.

Kasman will complete the quest and give you Mark of Raider NG

7. To change your profession, talk to Osborn High Prefect in the Orc Guild of Gludin.