Here is the full list of all 10 The Lovebirds achievements.
You clicked James when you got The Slashes Ending...
You made pretty good choices... You got The Asylum Ending...
You watched the whole credits and saw more than those who didn't...
You just broke my heart... You got The Last Death Ending...
You went to the forest after Olivia's... Smokin' hot accident...
You watched me burn her...
You chose Demons over Angels...
You tried to skip the cutscene of James talking to the mystery person...
You chose Angels over Demons...
You started the game...