Here is the full list of all 44 Utawarerumono: Mask of Deception achievements.
Challenged Dream Match for the first time.
Destroyed Moznu's axe.
Defeated the Tatari Unkami.
Defeated the Boro-Gigiri.
Unlocked all BGM.
Unlocked all event visuals.
Witnessed the ending of the game.
"Vurai" completed.
"He Who Conquers" completed.
"The Rescue" completed.
Used a Final Strike.
"Shadows" completed.
Played Recollections.
"Mononofu" completed.
Broke through enemy's ZOC.
"Conflict" completed.
"Remnants and Remembrance" completed.
"The Prisoners" completed.
"Nakwan" completed.
"Vice and Virtue" completed.
Successfully engaged in Critical 100 times.
"Forbidden Games" completed.
Successfully executed a reactive Skill.
Equipped an item.
"Elopement" completed.
"The First Mission" completed.
Used Action Chain on yourself.
"Bandits and Brigands" completed.
Stopped an enemy movement with ZOC.
Spent a bonus point.
"A Familiar Threat" completed.
"Extermination" completed.
Successfully executed an Action Chain.
Accessed the Glossary.
"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.
On one map, defeated 10 enemies with 1 unit.
Defeated more than 300 enemy units.