Here is the full list of all 51 Lunar's Chosen achievements.
Sleep with Serena
Meet Meg
Get transformed into a woman
Buy all 5 machines for Claire's club
Sleep with Claire
Meet Amber
Sleep with Amy
Learn Amy's Secret
Meet Amy
Set up your portfolio
Meet Claire
Meet Serena
Find a secret image
Win a game of pairs
Buy an item from the shop
Spend your first night in your new home
Meet Katie
Find 10 secret images
Find 100 secret images
Do a photoshoot for a client in the studio
Buy 25 items from the shop
Sleep with ten people
Meet all seven main characters
Have someone tell you they love you
Meet 20 side characters.
Be transformed into a woman again voluntarily
Visit a VIP room in the club
Visit 5 different VIP rooms
Read someone's mind in the club
Get someone pregnant
Sleep with Amber
Have Amber move in with you
Restore Amber's magic
Get Amber her money back
Give Amy the option to cure herself
Fix Amy and Jamie's relationship
See both Kim and Claire bimbofied
Find out Claire has magic
Meet Imry
Have sex with Imry
Change your title with Imry
Sleep with Katie
Tell Katie about Magic
Find out Katie's Job
Sleep with Meg
Meet Falla
Magically Bond with Meg
Revive Star
See Serena's Fairy Form
Be shrunk down to fairy size
Revive Sandra