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.
Used a Final Strike.
"The Rescue" completed.
"Conflict" completed.
"Mononofu" completed.
"Shadows" completed.
"Remnants and Remembrance" completed.
"The Prisoners" completed.
"Nakwan" completed.
Broke through enemy's ZOC.
"Vice and Virtue" completed.
Successfully executed a reactive Skill.
"Forbidden Games" completed.
Successfully engaged in Critical 100 times.
"Elopement" completed.
Used Action Chain on yourself.
"The First Mission" completed.
"Bandits and Brigands" completed.
Stopped an enemy movement with ZOC.
"A Familiar Threat" completed.
Equipped an item.
"Extermination" completed.
Successfully executed an Action Chain.
"Test of Will" completed.
Took advantage of enemy's weak attribute.
Successfully executed a critical.
Accessed the Glossary.
Watched the opening movie.
All trophies achieved.
Defeated the Boro-Gigiri.
Destroyed Moznu's axe.
Defeated the Tatari Unkami.
Spent a bonus point.
Played Recollections.
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.