Achievement: No Error Streak II
No Error Streak II
250 XP
Make no error for 20 problems.
2013 users completed this achievement.
Completed by Lefrans, Kantapat, Sebastiaan, Fed, Ovigohouse, Nadeshda, Natee, Владимир Пайзин, Захарова Светлана, Надежда Захарова and more.