Solve Sudoku in easy mode once
Solve sudoku in normal mode once
Solve sudoku in hard mode once
Score 66 points on sudoku + Beat game in easy mode (+1 point) + Beat game in normal mode (+5 points) + Beat game in hard mode (+10 points)
Score 15 points on sudoku + Beat game in easy mode (+1 point) + Beat game in normal mode (+5 points) + Beat game in hard mode (+10 points)
Finish a sudoku game in less than 5 minutes
Rate the game
Solve sudoku in very hard mode once
Finish 10 sudokus