Here is the full list of all 48 HOKUSAI achievements.
Played 1 hour worth in total.
Saved a data file.
Saved 5 data files.
Saved 10 data files.
Moved an item.
Generated a text object.
Favorite an asset from Workshop.
Created 5 scenes in a data file.
Created 10 scenes in a data file.
Created 15 scenes in a data file.
Selected a color of item.
Previewed an image on scene editing.
Renamed a data file.
Clicked the carousel banner.
Launched the Asset Editor.
Created an asset.
Created 5 assets.
Created 10 assets.
Created an asset which has 5 categories.
Created an asset which has 10 categories.
Created an asset which has some colors.
Created the thumbnail of scenes.
Set the preview image of assets.
Imported a PSD image.
Imported an image with size or position changed.
Entered the information of assets.
Read the help or guides.
Uploaded an asset to Workshop.
Uploaded 5 assets to Workshop.
Uploaded 10 assets to Workshop.
Exported images once.
Exported images 10 times.
Took a screenshot once.
Took screenshots 10 times.
Loaded an asset.
Loaded 5 assets.
Saved 100 data files. (DLC Required)
Created 100 scenes in a data file. (DLC Required)
Created 100 assets. (DLC Required)
Uploaded 100 assets to Workshop. (DLC Required)
Exported images 100 times. (DLC Required)
Took screenshots 100 times. (DLC Required)
Loaded 100 assets. (DLC Required)
Selected items 100 times while editing a scene. (DLC Required)
Rated 100 assets on Workshop. (DLC Required)
Favorite 100 assets from Workshop. (DLC Required)
Unlocked all achievements.
Unlocked all achievements, including Extended Edition. (DLC Required)