Here is the full list of all 44 Utawarerumono: Mask of Deception achievements.
Unlocked all BGM.
Unlocked all event visuals.
Accessed the Glossary.
Witnessed the ending of the game.
"Vurai" completed.
"He Who Conquers" completed.
"The Rescue" completed.
Used a Final Strike.
"Shadows" completed.
"Mononofu" completed.
Broke through enemy's ZOC.
"Conflict" completed.
"Remnants and Remembrance" completed.
"The Prisoners" completed.
"Nakwan" completed.
Successfully engaged in Critical 100 times.
"Vice and Virtue" completed.
Spent a bonus point.
"Forbidden Games" completed.
Successfully executed a reactive Skill.
"Elopement" completed.
Equipped an item.
"The First Mission" completed.
Used Action Chain on yourself.
Stopped an enemy movement with ZOC.
"Bandits and Brigands" completed.
"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.