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