Tetraminos
17 Achievements
Steam
Challenge Master
Complete challenge #20 in Challenge mode
2.8%
How to unlock the Challenge Master achievement in Tetraminos - Definitive Guide
Challenge mode is like Endless mode but with clearing rows as the goal instead of scoring. You have a time limit that gets reset every time you clear one or more rows. The next challenge starts directly after completing the challenge before. The "hardest" challenge is clearing 15 rows within the time limit. You should have no trouble with this after getting "Elite".