Achievement: No Error Streak II
No Error Streak II

250 XP
Make no error for 20 problems.
425 users completed this achievement.
Completed by Igoru, kot2lar, Supratic Gupta, 27B20-SKX, BG.Peem, kingyip, Aidarqwerty, Kanyanatrattanawong, 27B11-Lynxx, Trainbrain and more.