Here is the full list of all 8 Sacra Terra: Kiss of Death Collector’s Edition achievements.
Found every item in every hidden object puzzle without using a hint
Watched every video
Complete "Sacra Terra: Kiss of Death"
Completed the game without using a single hint
Completed every mini-game without skipping any of them
Played the game for more than one hour straight
Completed a mini-game in less than one minute
Found every item in a hidden object puzzle without using a hint