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    • Achievement: Speed IV

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    Speed IV

    4000 XP
    Finish a collection between 10k and 8k with an avg. time of under 18 seconds.*
    *The collection must contain at least 100 problems.

    529 users completed this achievement.

    Completed by Lethologian, Brook Roberts, Patrick361, Bruinfix, Scorpion 2.4, Julian Jenewein, Wolland, DaAffegoat, Mega File, Erisia Music and more.