Here is the full list of all 21 Super Hardcore achievements.
Level 21 is passed. Game Over!
Level 20 is passed
Level 19 is passed
Level 18 is passed
Level 17 is passed
Level 16 is passed
Level 15 is passed
Level 14 is passed
Level 13 is passed
Level 12 is passed
Level 11 is passed
Level 10 is passed
Level 9 is passed
Level 8 is passed
Level 7 is passed
Level 6 is passed
Level 5 is passed
Level 4 is passed
Level 3 is passed
Level 2 is passed
Level 1 is passed