Here is the full list of all 25 Cube Land Arena achievements.
Level 4 Completed
Level 3 Completed
Halloween Level 4 Completed
Halloween Level 5 Completed
Halloween Level 2 Completed
Halloween Level 3 Completed
Level 20 Completed
Halloween Level 1 Completed
Level 8 Completed
Level 9 Completed
Level 5 Completed
Level 6 Completed
Level 7 Completed
Level 19 Completed
Level 2 Completed
Level 18 Completed
Level 17 Completed
Level 15 Completed
Level 16 Completed
Level 14 Completed
Level 13 Completed
Level 10 Completed
Level 11 Completed
Level 12 Completed
Level 1 Completed