Here is the full list of all 30 Royal Order achievements.
Fire Magic reaches 200.
Water Magic reaches 200.
Wood Magic reaches 200.
Wind Magic reaches 200.
Light Magic reaches 200.
Darkness Magic reaches 200.
Intimidating reaches 50.
Dignified reaches 50.
Straightforward reaches 50.
Charismatic reaches 50.
Considerate reaches 50.
Manipulative reaches 50.
Reach Emrys's romance ending.
Reach Emrys's bad ending.
Reach Darryl's romance ending.
Reach Darryl's bad ending.
Reach Iris's romance ending.
Reach Iris's bad ending.
Reach all endings of the game.
Unlock 3 unique death endings.
Unlock 9 unique death endings.
Unlock 15 unique death endings.
Unlock all death endings.
Sacrifice yourself for every delivery.
Steal for every delivery.
Attend or host 5 parties in one playthrough.
Unlock 6 Daily Life images for Emrys within one playthrough.
Unlock 6 Daily Life images for Darryl within one playthrough.
Unlock 6 Daily Life images for Iris within one playthrough.
Unlock 7 Daily Life images for Others within one playthrough.