Time:Jun 24th, 2019 00:00:00 to Jul 31st, 2019 23:59:59 (Server Time)
Complete all stages in Map 20 with 1 star to win 1000 Crystal, Queen of Icefield*1.
Complete all stages in Map 20 with 3 stars to win 2000 Crystal, Ophiuchus *1.
Note:
1. You must clear all stages of every map (including hidden stages) to win the reward.
2. Rewards will go to your chest once you meet the request.