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