Here is the full list of all 19 Sudokube achievements.
Finish 3 Master puzzles.
Finish a Master puzzle in less than fourty-five minutes.
Solve your first Master puzzle.
Finish 5 Hard puzzles.
Solve your first Hard puzzle.
Finish a Hard puzzle in less than thirty minutes.
Finish 5 Normal puzzles.
Solve your first Normal puzzle.
Finish a Normal puzzle in less than twenty minutes.
Finish 10 Easy puzzles.
Finish an Easy puzzle in less than nine minutes.
Solve your first Easy puzzle.
Finish 10 Beginner puzzles.
Solve your first Beginner puzzle.
Finish a Beginner puzzle in less than 90 seconds.
Boot up the game. Such an accomplishment!
Solve an Impossible puzzle. I'm impressed!
Finish a second Impossible puzzle. Are you ok? Do you enjoy painful experiences?
Finish an Impossible puzzle in less than a day. There is nothing left for you to learn, go out and Sudokube to the extreme!