Here is the full list of all 44 Utawarerumono: Mask of Deception achievements.
Unlocked all BGM.
Unlocked all event visuals.
Witnessed the ending of the game.
"Vurai" completed.
"He Who Conquers" completed.
Accessed the Glossary.
"The Rescue" completed.
Used a Final Strike.
"Shadows" completed.
"Mononofu" completed.
"Conflict" completed.
"Remnants and Remembrance" completed.
Successfully engaged in Critical 100 times.
"The Prisoners" completed.
"Nakwan" completed.
Broke through enemy's ZOC.
"Vice and Virtue" completed.
Successfully executed a reactive Skill.
"Forbidden Games" completed.
Used Action Chain on yourself.
"Elopement" completed.
"The First Mission" completed.
"Bandits and Brigands" completed.
Stopped an enemy movement with ZOC.
Equipped an item.
Spent a bonus point.
"A Familiar Threat" completed.
"Extermination" completed.
Successfully executed a critical.
Played Recollections.
Successfully executed an Action Chain.
"Test of Will" completed.
Took advantage of enemy's weak attribute.
Watched the opening movie.
All trophies achieved.
Defeated the Boro-Gigiri.
Destroyed Moznu's axe.
Defeated the Tatari Unkami.
Challenged Dream Match for the first time.
Used Action Chain with all characters.
Used Final Strike with all characters.
Reached the max level for a unit.
On one map, defeated 10 enemies with 1 unit.
Defeated more than 300 enemy units.