Here is the full list of all 13 Ruby Dreams: Immortal Promise achievements.
Enter the Beaumont Mansion
Completely fill up Sebastian’s love bar
Completely fill up Alexander’s love bar
Completely fill up Roderick’s love bar
Completely fill up all love bars
Go to the ball with Sebastian
Go to the ball with Roderick
Go to the ball with Alexander
Don’t get an invitation to the ball
Use the journal to replay a day
Complete the image gallery
Finish a dream level in under 4 minutes
Skip through over 5 dialogue lines in 1 second