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