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