[Event] Level 20 Achievement Box (7 Days)

- Description: A box for Adventurers who have reached Lv. 20. It cannot be used after it expires. - You'll get [Event] Karlstein Classic Box (15 days), [Event] [Pet] Kuku, [Event] Elion's Tear x3, Gold Bar 1G x2, [Event] Level 30 Path to Power (2 days), [Event] Level 30 Achievement Box (7 days).

- Additional use requirements are not yet decoded; this is not a complete eligibility check.