Here is the full list of all 23 Haydee achievements.
Find the secret room.
Find the Magnum.
Find the Pliers.
Find the Crowbar.
Die in the same room 3 times in a row.
Complete the tutorial section.
Find the tutorial section ammo.
Find your death in Haydee.
Find the SMG.
Complete the game with the default pistol only.
Kill all the bots you encountered.
Become the new Master.
Complete the game with no damage received.
Complete the game without saving.
Complete the game in one hour.
Complete the game on Softcore.
Complete the game on Hardcore.
Fail the escape.
Complete the game with 80% headshots.
Complete the game killing no more than 50 bots.
Break the system.
Find the useless card.
Create havoc.