Here is the full list of all 34 realMyst: Masterpiece Edition achievements. It takes around 6-8 hours to unlock all of the achievements on Windows.
Found padlock and key at the bottom of the lighthouse in Stoneship
Visit Ti'ana's grave
Solved generator puzzle in power house
Ending with Sirrus freed
Ending with Achenar freed
Found skeleton in Mechanical Age
Wound the toy bird too tight
Hide behind the plant in Sirrus' room in Stoneship
Get up on Sirrus' bed in Channelwood
Ending trapped in D'ni Age
Ride tree to the very top
Used all power breakers
Found dagger in the crows' nest on ship
Viewed a crystal combination
Controlled the Aurora
Found way back from Rime Age
Finished Myst with best ending
Found white page inside
Watch Sirrus' message on Achenar's imager
Found way back from Channelwood Age
Ride tree up from the bookroom below
Opened safe in cabin
Found way back from Stoneship
Raised sunken ship
Viewed all dated star patterns
Solved sound puzzle in one try
Found way back from Selenitic Age
Finished maze puzzle in Selenitic Age without pressing
Perfectly tuned antennas in Selenitic Age
Rotated the fireplace
Found way back from Mechanical Age
Sat in one of the thrones in Mechanical Age
Solved gear puzzle inside clocktower
Found the panel inside the inside panel