Achievement: Speed IX

Speed IX

Finish a collection between 7k and 5k with an avg. time of under 10 seconds.*

*The collection must contain at least 100 problems.

107 users completed this achievement.

Completed by AK-33, ecdave, Александра, Алёна Киреева, Neri, caranthir, Filin01, Erisia Music, sinan, tyunth and more.