Here is the full list of all 46 SKYHILL achievements.
Die 100 times
Die 20 times
Complete the game on Hardcore
Collect all notes in the game
Get alternative ending
Complete the game only eating vegan food
One-shot the parasite
Die in any of the first 10 floors
Kill 10 enemies in the row with a mop
Use Hard Times perk
Use Lucky Bastard perk
Explore every room in one playthrough
Dodge three hits in a row
Check the cameras
Fight two enemies in one combat and win
Release the hangman
Use Mysterious Device perk
Use Retro Cinema perk
Kill an enemy with your bare hands
Use Deductive Method perk
Get secret ending
Complete the game
Fix all panels during one playthrough
Upgrade your Bed to max level
Upgrade your Door to max level
Upgrade your Kitchen to max level and cook something
Score a critical hit for 60+ damage
Upgrade your Workbench to max level
Craft any weapon
Print the document
Barter something with the old man
Use Amnesia perk
Loot the dead bird
Follow the legend
Reach the 50th floor
Reach level 7 with your character
Craft three medium medkits
Cure a poisoning
Turn on the TV
Win a battle with 5 or less health
Open card lock
Read three SMS
Chat with the computer
Die
Fix the elevator without any items
Get food-poisoning