Here is the full list of all 21 8 Ball 2 achievements.
Level 1 completed
Level 2 completed
Level 3 completed
Level 4 completed
Level 5 completed
Level 6 completed
Level 7 completed
Level 8 completed
Level 9 completed
Level 10 completed
Level 11 completed
Level 12 completed
Level 13 completed
Level 14 completed
Level 15 completed
You found the shortcut.
Halloween level 1 completed
Halloween level 2 completed
Halloween level 3 completed
Halloween level 4 completed
Halloween level 5 completed