Here is the full list of all 50 Seduce Me 2: The Demon War achievements.
Shadow Rules the Demon World
Fae Rules the Demon World
Rabbit Rules the Demon World
Help True Love Prevail for Saero and Ezaeur
Let Saero Search for the Rose
Sergeant Refuses to Rule
Betray the Rebel Queen
Go Through the Brute's Test
Get Away from the War with Fae
Learn of Saero and Ezaeur's Fate
Become Baptized by Saero
Keep Ezaeur Forever
Share Diana's Love with Saero
Begin Diana's Story
Live a Human Life with Damien
Mourn The Death of the Rebel Queen
Have him a Demon Forever
Watch Your Love Burn
Give Your Life For Damien's
Begin Damien's Story
Witness The Last One Standing
Welcome New Joy with Matthew
Put Trust in a Killer
Witness Inequality
Begin Matthew's Story
Fail The Dragon's Test
Return Home with Sam
The Four Rebel Leaders Work Together
Rule The Demon World with Aomaris
Become Queen of the Demon World
Perish Centimeters From Your Love
A Gift From Hell
Experience Erik's Eternal Devotion
Die At The Hands of the Spirit
Become Victim of Revenge
Begin Erik's Story
Become Lost in Destiny
Learn Shadow's Secret
Defy Destiny with James
Diana Rules the Demon World
Experience The Story For the First Time
Be Sentenced by an Angel
Lose your Trainer
Trap the Demon Lord Without Bloodshed
Obtain an Angel's Forgiveness
Use Blood Magic against the Demon Lord
Begin James's Story
Begin Sam's Story
Meet K, your guide!
Experience More of This Story