Here is the full list of all 20 Lost Lands: The Four Horsemen achievements.
Completed the main and bonus chapters without skipping the mini-games.
Completed the main and bonus chapters without using any Hints in the HO scenes.
Completed an HO scene with no unnecessary touches.
Completed the plates-and-symbols mini-game with no unnecessary touches.
Completed the main chapter on Hard difficulty.
Completed the main and bonus chapters without skipping any dialogue or videos.
More than 5 minutes were spent in mini-game to complete it.
Completed the animals mini-game with less than 70 handle turns.
Completed the main and bonus chapters without using any Hints.
Restored the dwarf mosaic in less than 1 minute.
Collected all the pages from the book of Forgotten Lands.
Collected all Ghost objects.
Assembled the Magic machine.
Completed the mini-game with water level.
Completed an HO scene in under 2 minutes.
Saved yourself from the dark horseman.
Assembled the mechanical device with gears.
Completed 3 mini-games in a row without using a Skip.
Found 3 objects within 3 seconds in HO scene.
Completed a mini-game in less than a minute.