Here is the full list of all 20 Sugar Cube: Bittersweet Factory achievements.
Collect Sugar Diamond
Collect Sugar Crystal
Clear the 1st level
Jump over 1000 times
Flip over 10000 panels
Clear all levels with normal ending
Clear all levels with true ending
Clear cookie factory without dying
Clear chocolate factory without dying
Clear candy factory without dying
Clear gum factory without dying
Clear cola factory without dying
Collect Sugar Opal
Collect Sugar Platinum
Collect Sugar Ruby
Collect Sugar Garnet
Collect Sugar Emerald
Collect Sugar Peridot
Collect Sugar Sapphire
Collect Sugar Topaz