Here is the full list of all 86 Lust Academy - there are Season 1 achievements.
Reject Naomi
Reject Lily at the Academy
Reject Lily in the forest of mushrooms
Reject Audrey
Don't take advantage of Samantha's weakness
Comfort Hayley
Do not sneak a peek at Ashley
Complete Season 1 main storyline
Find out the truth about your parents
Save Cordale from destruction
Win 10 Duels
Win 5 Duels
Sleep with Audrey in her true form
Sneak peeks at Molly in the morning
Make love with Lily at the Academy
Get the Lion's Seal
Mix a Reflection Potion
Meet Mushroom girl in the forest
Make love with Lily in the forest of mushrooms
Become a participant in the tournament
Stick your fingers in Lily's panties
Have your first kiss with Lily
Save Elijah's brother
Make love with Hayley on the beach
Go to a desert island
Take Haley on a second date
Defeat the phantom soulstealer
Take additional class from Victoria
Get Samantha to help with the ritual
Go on a date with Adele
Catch 100 fishes for Gordon
Get in the VIP with Sadira
Get a massage
Get into a secret room
Spy on Amelie
Have your first kiss with Hayley
Make love with Naomi at the library
Agree to help Haley investigate E. Bloom mystery
Mix a Lesser Heal Potion
Agree to have sex with Audrey
Summon Leona through the sorting book
Volunteer for Victoria's class
Defeat the student from Adderin in a duel.
Apply a potion during a duel
Win Duel
Catch 50 fishes for Gordon
Get in the VIP with Lucy
Get bitten by Vanessa
Drink Vanessa's signature cocktail
Save Adele from Diego
Catch 25 fishes for Gordon
Catch 30 fishes in one fishing trip
Get a blowjob from Naomi
Learn a combat bolt
Steal the answers to Naomi's test
Agree to help Naomi with her potions
Prove to Naomi that you are worthy of her
Take Audrey to a closed cafe
Help Amelie deal with the Elves
Kiss Samantha after the party
Run into Samantha in the bathroom
Win the weekly house competition
Find out the truth about Audrey
Return 10 Lost Folios to Amelie
Kiss Samantha on the lips
Get milk for Audrey
Get the highest tip possible
Return 5 lost folios to Amelie
Correctly name the potion recipe in Sabrina's class
Find books for Lily
Agree to help Lily lead Leonheart to victory
Return a lost folio to Amelie
Attend Sabrina's first class
Get a job at the cafe
Attend Victoria's first class
Ask Haley out on a date
Get textbooks from Ameliе
Click on the ducks in the bathroom at Leonheart campus
Get on Leonheart house
Pass the exam and enter the Academy
Find out about houses in Cordale
Read someone's thoughts
Sneak a peek at Ashley
Get a letter from the Academy
Click on the rubber ducks in the house