Here is the full list of all 14 Monolith achievements.
Select Finn's favorite book.
Disconnect all cables on the battery in less than 7 seconds.
Look at all Holo Records.
Get the cog wheel in less than 25 turns.
Wait until the screen saver icon hits the corner exactly.
Look at all possible endings of the mirror puzzle.
Make sure Tessa's book wins the meeting.
Find access to the station's developer options.
Unlock all levels of developer options.
Create the axle mounting with the perfect material mix. Accurate to the gram!
Melt the broken axle mounting and use it in the 3D printer.
Activate every Holo Record, examine every location in the planetary console, look at every print option.
Close the incubator after you took the fruit.
Anyone can say that...