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