Arena: Top 10 Participate as a rated contestant in the Arena and achieve a rank of top 10 or greater
151
The 2nd Korea Aerospace University Programming Contest Participated in the 2nd Korea Aerospace University Programming Contest, or solved 1 or more problems in its open contest
164
IamCoder 2021 Year-end Contest Participated in IamCoder 2021 Year-end Contest, or solved 1 or more problems in its open contest
170
Creator of the Stars: Chapter 1 Participate as a jury, a tester, or a staff in the Arena
171
Creator of Balance - Platinum Achieve a rating of 1600 or higher for all 8 tags displayed on the profile