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