Kerning City’s Dark Lord handed me a letter and told me to deliver it to Thief Job Instructor, who can be found somewhere in Construction Site North of Kerning City. He said I’d be able to learn more details there.

交付 NPC：Thief Job Instructor需要 Dark Lord's Letter x1奖励 Dark Lord's Letter x1经验 +3,150后续任务：Test of Qualification

Construction Site North of Kerning City’s Thief Job Instructor gave me a mission to enter a hidden area, defeat the monsters there, and collect a certain item.

交付 NPC：Thief Job Instructor等级 >= 30交付 NPC：Thief Job Instructor需要 Dark Marble x30经验 +3,150后续任务：Proof of Qualification

After successfully passing Thief Job Instructor’s test, I received The Proof of a Hero as proof. Now, I should return to Dark Lord in Kerning City, right?

交付 NPC：Thief Job Instructor等级 >= 30奖励 The Proof of a Hero x1经验 +3,150