This is an achievement guide so i will skip all the puzzles that are not linked to an achievement or are not mandatory for the progress. If you find spelling mistakes, feel free to tell me.
 
 

Walkthrough

Start the game.
 
 

 🏆 TIME TRAVELLER
You sucessfully travelled through time! 

 

Room 1

 
Go through every bookshelf until:
 
 

 🏆 BOOKWORM
You enjoy finding a good read 

 
Look through a window for a little time.
 
 

 🏆 WINDOW GAZER
You enjoy nothing more than to gaze out of a window 

 
 
Solve the map puzzle like this:
 
 

 

• Take the key and open the door next to the fuse box.
• Put the books on the shelf: Red – Blue – Light blue – White
• Take the key and open the closed drawer.
• Take the fuse and put on the fuse box.
• Go to the exit and put: 4967

Room 2

 
Solve the puzzle on the wall like:
 
 

 

• Through the door, look over the couch.
   
   
   
   
   

   🏆 COSY NOOK
  You love nothing more than to cosy up with a good book 

• Go behind the stairs.
   
   
   
   
   

   🏆 INVESTIGATOR
  You leave no stone unturned 

 
Put the next code on the puzzle on the chair:
 
 

 
 

• Put in the door upstair the code: 43442

Room 3

 

• Take the key on the broom, open the last cabin with it and take the tile.
• Write ‘MIRROR’ on the first lock.
• Put in the next one: Triangle – Pentagon – Pentagon – Square – Triangle – Pentagon – Pentagon – Square.
   
   
   
   
   

   🏆 PERSISTENCE
  You will never give up 

• Go to the exit door and put: 4132

Room 4

 

• Grab a key inside of a locker.
• Go through the door and grab one pipe.
• Put the code on the panel: 081412.
• Connect the pipes.
• Look at the clock and put: 05:35
• Go to the exit door and put: 87302

Room 5

 

• Go to the first door and put: 1-2-1-1-2
• Put the next code:
   
   
   
   
   
  

Room 6

 

• Look at the exit door and put: 4-6-3-1-2-5

Room 7

 

• Look for a key inside a drawer, open the locked door with it and read the note.
   
   
   
   
   

   🏆 LETS PLAY
  You love to play games 

• Look at the exit door and put: 63961

Room 8

 

• Look at the levers and put in the next way: up-down-up-up-down-down
• Go to the math puzzle and put: + – /. Grab the tile.
• Go to the panel and put 9143.
• Grab the key and exit the room.

Room 9

 

• Grab the tile over a fence in the middle of the room.
• Go to the exit door and put: 219

Room 10

 

• Look at the exit door and put: 95273
• Go to the color panel and put: 4-1-3-2

Room 11

 

• Go to the cassete radio and take the tile.
• Go to the math puzzle: – + /
• Grab the flask behind one box.
• Put the compunds in the next order: C5 – HC3N – H2C20 – I-H2C3 – HCC-NC – C4H

 

 🏆 BACK TO THE FUTURE
You're a time travelling expert! 

 
 
 

Extended gameplay

If you want to see how to unlock every puzzle, there’s a video guide for it. All the credits go to the creator ‘Chocoholie’
 
 

 
 
 

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This is all about ALUMNI – Achievement Guide & Walkthrough; I hope you enjoy reading the Guide! If you feel like we should add more information or we forget/mistake, please let us know via commenting below, and thanks! See you soon!