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