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Complete a certain challenge.

3 guidesOffline Game Mode - These achievements require play in game modes that do not necessitate a connection to any online services.Single Player - These achievements can be obtained by a single player.Time/Date - These achievements require you to play the game or perform actions at certain times, within a time limit, or on specific dates.
Mack StardustMack Stardust256,044
14 Oct 2019 14 Oct 2019
2 1 0
Just to add onto Sitop Apen's guide for this achievement, if you're spending too much time on a puzzle in the challenge then it's probably best you cn_start reset it and start again. RNG is a big factor in getting this achievement, and getting easily conquerable puzzles can make or break your progress. Regardless, you'll need to be *good* at solving puzzles quickly to pull this off, so grinding out the challenge itself as practice doesn't hurt at all.