Here is the full list of all 44 Utawarerumono: Mask of Deception achievements.
Challenged Dream Match for the first time.
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.
"Shadows" completed.
"Mononofu" completed.
Broke through enemy's ZOC.
"Conflict" completed.
Defeated more than 300 enemy units.
Defeated the Tatari Unkami.
"Remnants and Remembrance" completed.
"The Prisoners" completed.
"Nakwan" completed.
Defeated the Boro-Gigiri.
"Vice and Virtue" completed.
Destroyed Moznu's axe.
"Forbidden Games" completed.
Successfully engaged in Critical 100 times.
"Elopement" completed.
Used Action Chain on yourself.
Played Recollections.
"The First Mission" completed.
Successfully executed a reactive Skill.
"Bandits and Brigands" completed.
Stopped an enemy movement with ZOC.
"A Familiar Threat" completed.
Spent a bonus point.
"Extermination" completed.
Successfully executed an Action Chain.
Equipped an item.
"Test of Will" completed.
Accessed the Glossary.
Took advantage of enemy's weak attribute.
Successfully executed a critical.
Watched the opening movie.
All trophies achieved.
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.