Here is the full list of all 7 Luxocraft achievements.
The base game contains 6 achievements, and there is 1 DLC pack containing 1 achievements.
The count of used Variation Materials
The count of created Free [Ready-To-Use] Workshop Items
The count of created Paid [Curated] Workshop Items
The count of created Blocks (any shapes)
The count of created Group Blocks (any shapes)
The count of used Unique Materials
You receive a prize when you start the game for the first time