Here is the full list of all 49 Regalia: Of Men and Monarchs achievements.
Max out Mifune's Personal Bond.
Max out Esther's Personal Bond.
Successfully placate the three feuding parties.
Win the negotiations by eliminating both Tag and Bink.
Win the negotiations by exposing Tag.
Carry on the legacy of the fallen hero.
Fish out the legendary item.
Catch 25 fish.
Fish out 10 items.
Max out Miri's Personal Bond.
Vanquish the Fomorian Ancient.
Max out Valen's Personal Bond.
Max out Theo's Personal Bond.
Max out Grenn's Personal Bond.
Max out Levant's Personal Bond.
Max out Diego's Personal Bond.
Max out Haksun's Personal Bond.
Max out Shichiroji's Personal Bond.
Max out Henrietta's Personal Bond.
Max out Signy's Personal Bond.
Complete the game. Thanks for playing!
Max out Aliss' Personal Bond.
Max out Riehl's Personal Bond.
Max out Winter's Personal Bond.
Max out Gunther's Personal Bond.
Complete Chapter 6.
Clear 15 Dungeons.
Unlock 30 Codex entries.
Reach Party Level 20.
Complete Chapter 5.
Win 50 battles.
Complete 25 Text Adventures.
Complete 50 challenges.
Complete Chapter 4.
Max out Griffith's Personal Bond.
Win the negotiations by exposing Bink.
Complete Chapter 3.
Reach Party Level 10.
Vanquish the Visage of Anguish.
Complete Chapter 2.
Max out Baz and Lilka's Personal Bond.
Craft 100 items.
Craft 25 items.
Clear 3 Dungeons.
Complete Chapter 1.
Complete 5 challenges.
Unlock 5 Codex entries.
Complete a Text Adventure.
Win your first battle.