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