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