Here is the full list of all 21 Cubikolor achievements.
Find all special kube actions in main menu...
Find the red glove inside the God cube
Obtain 150 red medals (complete 150 levels in Hardkore mode)
Obtain 50 red medals (complete 50 levels in Hardkore mode)
Obtain 10 red medals (complete 10 levels in Hardkore mode)
Roll the kube 51 200 times
After completing the game once, reduce the total accumulated time of all levels to under 90min
After completing the game once, reduce the total accumulated time of all levels to under 120min
After completing the game once, reduce the total accumulated time of all levels to under 180min
Complete 150 levels
Obtain 150 white medals (complete 150 levels without any help)
Obtain 150 gold medals (complete 150 levels without any help nor using gobacks)
Complete the level 138
Complete 100 levels
Complete the level 90
Complete the level 56
Complete 50 levels
Obtain 50 white medals (complete 50 levels without any help)
Obtain 50 gold medals (complete 50 levels without any help nor using gobacks)
Roll the Kube 1 024 times
Complete 10 levels