Met a developer of solved.ac at an event hosted or sponsored by solved.ac with 20+ participants

Contributed once or more between July 13, 2019 and June 4, 2020

Achieve a rating of 1600 or higher for all 8 tags displayed on the profile

Participate as a jury, a tester, or a staff in the Arena

Participate as a jury, a tester, or a staff for 5 times in the Arena

솔브드 그랜드 아레나 파티 퍼즐 헌트에서 모든 문제 해결

Achieved 22-star enchant at the 2022 April Fool's Day Hanbyeol Force Event

Celebrated the 1st anniversary of solved.ac