Complete book 1
Take alchemist's potion
Find robot's hiddent treasure
Defeat the enraged crowd
Avoid all fights in factory
Save the computer science teacher after deceiving him
Find a room behind a portrait
Shoot from a turret
Listen to all tape recordings
Find all clockmaker's letters
Defeat both cops without takigng any damage
Complete book 2
Put your trust in a bag of bricks
Complete book 7 without using any artefacts
Use every artefact from the book 7
Obtain a new skill
Upgrade your skills 5 times
Use 5 items in dialogues
Use 20 items in dialogues
Use ink in dialogues 5 times
Use ink in dialogues 20 times
Craft 5 items
Complete book 3
Craft 20 items
Dismantle objects for a total of 1000 ink
Block 50 damage
Win all existing fights
Drain 500 ink from enemies
Return keys to the neighbour
Steal food from the fridge
Enter the abandoned appartment on the first floor
Complete book 4
Complete book 5
Complete book 6
Complete book 7
Complete the epilogue
Leave half of the potion to the alchemist