Here is the full list of all 12 Knot achievements.
The player should complete 21th level
The player should complete 18th level
The player should complete 15th level
The player should complete 12th level
The player should complete 9th level
The player should complete 6th level
The player should complete 3th level
The player should complete 1st level
The player should complete 25th level
The player should complete 30th level
The player should complete 35th level
The player should complete 40th level