Achievement: Solve a 4d problem
Solve a 4d problem
700 XP
Solve a 4d problem.
361 users completed this achievement.
Completed by GhostRider, PYSM, Bartik12, Vincent83, Kyrgyzstan, Kicyfroth, Vladika, Rina Kim,
Ackerman, Gudzumi_7 and more.
