Psychonauts in the Rhombus of Ruin
12 Achievements
2-3h
Steam
Checkmate
Solve the sliding box puzzle on the Train in 20 moves or less
4.2%
How to unlock the Checkmate achievement in Psychonauts in the Rhombus of Ruin - Definitive Guide
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Video with hint: https://youtu.be/9v2fRc1PmVM