Here is the full list of all 15 The Dreamatorium of Dr. Magnus 2 achievements.
Complete the game.
Unlock all Achievements.
Finish all Minigame without skipping.
Find all the Eyes of Horus.
Finish all Hidden Object Scenes without using Hint.
Use your Amulet 5 times.
Finish 4 Hidden Object Scenes in a row without using Hint.
Finish any Hidden Object Scene in less than 1 minute.
Finish any Hidden Object Scene with less than 3 missclicks.
Discover the Dreamatorium passage.
Finish 5 Minigame in a row without skipping.
Find 5 hidden objects in 5 seconds.
Finish a Minigame in less than 1 minute without skipping.
Find an Eye of Horus.
Complete your first quest.