Here is a full walkthrough with the achievements guide for Lust Theory
Note: This walkthrough was created by Kilroy, it is still incomplete and will be updated later.
The Tutorial
Before you start playing let the whole main menu video play through to earn the AFK achievement.
The game starts off and you get to select your name and your relationships with the three women in the house, two about your age and an older woman. Only relationships where these people shouldn’t be having sex with each other will make sense in the context of the story.
Receive the First step achievement
Press P to activate the Panic screen and earn the Much panic! Such wow! achievement
The game opens with a scene with Nadia.
Receive Sweet dreams achievement.
A car alarm goes off and wakes you from your dream about Nadia.
Jessica comes into your room and tells you to get up.
Press the Angle button to see Jessica from different angles
Earn the Different perspective achievement
Early on in the game you aren’t going to have any real options. You’re going to have a single choice. The more rewarding choice will be presented in
and the less rewarding will be in regular text.
Go into the Hall
Go into the Bathroom
Go into the Hall
Go downstairs
Go to the Kitchen
Eat your breakfast
Go to Town
Go to School
Enter school
Click on Zoe and Megan
High
Sulfate
Vitriol
Burn
Earn Mr. Heisenberg achievement
Go back into the Hallway
Go back to your house
Go into the Living Room
Click on Jessica
Press the Hints button, you’re going to be doing this a lot for this game.
Go to the Garage
Click on the work bench
Click on the Red button in the upper right when Elizabeth comes in.
Earn the X-Ray achievement and see Elizabeth topless.
Go to the Kitchen
Talk to Megan in the Living Room
Go to your room
Go into the Hall
Go into the Bathroom
Go into the Hall
Go downstairs
Eat Breakfast
Go to Town
Click on the house next to your eight times
Earn the Wrong house, m8! achievement
Go to School
Enter School
Click on Megan and Zoe
Go to Classroom
High
Sulfate
Vitriol
Burn
Go into Hallway
Go into Living Room
Click on Jessica
Go to the Garage
Click on the Work Bench
Go to your room
Click on the bed
Go into the Hall
Go into the Bathroom
Click on the sink
Click on the sleeping pills
Go into the Hall
Go into the Bathroom
Go downstairs
Take a shower
Go downstairs
Earn the Douche achievement
Enter School
Talk to Megan and Zoe
Try calming the situation down
Go to the Classroom
This is the last time you’ll have to take the Pop Quiz
High
Sulfate
Vitriol
Burn
Go home
Go to the Living Room
Click on Jessica
Talk some more
Go to Jessica’s room
Click on the laptop
Go to your room
Click on your bed
Go to the Living Room
Click on Megan
Go to your room
She went on a date
Earn the Snitches get stitches achievement
Earn the Perv! Achievement
Earn the Finally free achievement
Click on your phone in the upper left
Click on the Gallery icon
Earn the Pretty Pictures achievement
Press the Hints button
Earn the Where was I? achievement
Now we’re ready to start playing
The Game
Go to the School
Click on Ellie
Go into the School
Go into the Classroom
Go into the Hallway
Earn the Like a ninja, or something achievement
Go to Hallway 2 around the corner
Go into the Bathroom
Talk to Ellie
Go to your room
Use the Fast Forward to get to the next day
Earn the Reset! Achievement
You’re right
Go to Jessica’s room
Click on Jessica
Compliment
Go to Megan’s room
Earn the Ever heard of knocking? Achievement
Go to school
Click on Ellie
Earn the Creep achievement
Enter school
Enter classroom
Go Home
Go to the Living Room
Click on Jessica
Go to Jessica’s Room
Advance time to Evening
Click on Jessica
Go to your room
Advance time to Night
Click on the computer
Advance time to Morning
Go to School
Click on Ellie
Enter school
Enter classroom
Go to Bathroom
Click on the Whatever Just Wash Your Hands poster
Earn the Equality achievement
Click on Ellie
You suck?
Sorry. ‘Meant to say “It sucks”
I like trains. (Like the Block you have to do it before the bar disappears)
Earn the We all do! Achievement
Go back to Hallway 1
Click on the door to the Teacher’s Lounge
Ellie will show me her boobs
Earn the Honesty pays achievement
Go back to the Bathroom
Click on Ellie
Pick whichever one you want
or
Pick whichever one you want
or
You’re done with Ellie until you get your Sexual Experience up to 5.
Go Home
Advance the time to Night
Go to Jessica’s Room
Advance the time to Morning
Go to School
Enter school
Click on Megan and Zoe
Go into Classroom
Click on Teacher
Looks aren’t everything
Wait
Go to Jessica’s Room
Click on the laptop
Advance time to Morning
Go to School
Enter school
Click on Megan and Zoe
Enter the Classroom
Click on Megan
Pick either choice
or
Go home
Go to the Living Room
Click on Jessica
Go to Jessica’s Room
Advance time to Evening
Click on laptop
Advance time to Morning
Click on Answer Zoe
Go to School
Enter school
Enter Classroom
Go to Hallway 2
Enter the Girl’s Locker Room
Earn the Never assume achievement
Wait about 15 seconds until the Spy on Zoe option appears.
Earn the Peeping Tom achievement
Go Home
Go to Jessica’s Room
Click on the Laptop
Advance time to Morning
Answer Zoe
Go to Classroom
Go to Girl’s Locker Room
Go in
Advance time to Morning
Answer Zoe
Click on the door to Megan’s Room
Wait about 15 seconds until the Spy on Megan option appears
Earn the Peek-a-Boo achievement
Go to Classroom
Click on Megan
Go to Megan’s Room
Click on Computer
Click on bed
Click on Bookshelf
Go to the Kitchen
Click on Elizabeth
Thanks to Kilroy for his great guide, all credit to his effort. you can also read the original guide from Steam Community. enjoy the game.
Yes, your turtoral was very helpful to find the horny moments.
thank you