Here is the full list of all 57 Utawarerumono: Mask of Truth achievements.
Dealt 5000+ damage to an enemy in one attack.
A job well done.
You can never go back...
Summoned shikigami 100 times.
You may never find warmth in this cold place.
Entered the Dream Arena.
Listened to all BGM tracks.
Viewed all event visuals.
Completed the ending.
Used Final Strike with all characters.
Power does not conform to the shape of its vessel.
Stood together and faced your hardships.
Shocked and appalled by a horrific sight.
Attacked by those who are loyal unto death.
Listened to an unwelcome monologue.
Finally found what you were looking for.
Used Co-op Finals with all characters.
Opened the door to the bird's cage.
Learned a crucial secret of a foreign land.
Saw your plans come to fruition.
Rampaged with no regard for those around you.
Viewed 500 or more battle callouts.
Dealt 1000+ damage to an enemy in one attack.
Your voice went unheard. A false truth deafens him.
Confessed your sins.
Who is his vengeance truly for?
Had an unexpected reunion.
Experienced heaven and hell.
Proved that best-laid schemes often go awry.
A soldier must resort to underhanded tactics at times.
Used a Co-op Final.
Used a Co-op Attack.
Learned a man's final wish in a duel to the death.
Witnessed the bond between two sisters.
Played Munechika's Trials.
Encountered one of undying loyalty.
Dealt 500+ damage to an enemy in one attack.
Settled a long-standing score.
Found the one hiding in shadows.
Managed to avert a crisis.
Cast away all mercy for your enemies.
Won 20 Mock battles.
Used a Final Strike.
Successfully executed criticals 200 times.
Played Free Battle mode.
Was accused of something you never did.
Viewed 100 or more entries in the glossary.
Successfully executed a reactive Skill.
Regained your sense for battle.
Successfully executed an Action Chain.
Successfully executed a critical.
Obtained all trophies.
Finally released your true strength.
Reduced to a mere beast.
Thank you for coming.
Completed all Dream Arena stages.
Obtained all battle rewards.