Here is the full list of all 44 Utawarerumono: Mask of Deception achievements.
Challenged Dream Match for the first time.
Unlocked all event visuals.
Unlocked all BGM.
Witnessed the ending of the game.
"Vurai" completed.
"He Who Conquers" completed.
On one map, defeated 10 enemies with 1 unit.
Defeated the Tatari Unkami.
Accessed the Glossary.
Used a Final Strike.
"The Rescue" completed.
"Shadows" completed.
"Mononofu" completed.
"Conflict" completed.
"Remnants and Remembrance" completed.
"The Prisoners" completed.
Used Action Chain on yourself.
"Nakwan" completed.
Broke through enemy's ZOC.
"Vice and Virtue" completed.
"Forbidden Games" completed.
Successfully engaged in Critical 100 times.
Successfully executed a reactive Skill.
Defeated the Boro-Gigiri.
"Elopement" completed.
"The First Mission" completed.
"Bandits and Brigands" completed.
Stopped an enemy movement with ZOC.
"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.
Destroyed Moznu's axe.
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.