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