Here is the full list of all 44 Utawarerumono: Mask of Deception achievements.
On one map, defeated 10 enemies with 1 unit.
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.
"Conflict" completed.
Defeated the Tatari Unkami.
"Remnants and Remembrance" completed.
"The Prisoners" completed.
"Nakwan" completed.
Broke through enemy's ZOC.
"Vice and Virtue" completed.
Destroyed Moznu's axe.
"Forbidden Games" completed.
"Elopement" completed.
Defeated the Boro-Gigiri.
Successfully executed a reactive Skill.
"The First Mission" completed.
Successfully engaged in Critical 100 times.
Used Action Chain on yourself.
"Bandits and Brigands" completed.
Stopped an enemy movement with ZOC.
Accessed the Glossary.
"A Familiar Threat" completed.
Equipped an item.
Spent a bonus point.
"Extermination" completed.
Played Recollections.
Successfully executed an Action Chain.
"Test of Will" completed.
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.
Defeated more than 300 enemy units.