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