Here is the full list of all 21 Marble Age: Remastered achievements.
Complete the "Dorian Invasion" trial.
Complete the "Persian Invasion" trial.
Complete the "Alexander the Great" trial.
Unite Greece.
Complete the "Christianity" trial.
Beat the game with Athens.
Complete the "Rise of Rome" trial.
Complete the "Scythian Invasion" trial.
Complete the "Hun Invasion" trial.
Complete the "Justinian's Plague" trial.
Complete the "Arabian Invasion" trial.
Unite the world.
Beat the game with Corinth.
Beat the game with Sparta.
Get more than 40 final score points.
Get more than 90 final score points.
Get more than 150 final score points.
Get 190 final score points playing as Sparta on Hard difficulty.
Get 200 final score points playing as Athens on Hard difficulty.
Get 190 final score points playing as Corinth on Hard difficulty.
End the game in 2 turns