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