Encountered the Zombie Plague.

Encountered the Bad Composition.

Encountered the Possessive Mask.

Found the cure.

Recontained SCP-055.

Encountered the Old AI.

Encountered the Shy Guy.

Encountered the Old Man.

Acquired the "Telekill Alloy".

Encountered the Shadow Lamps.

Obtained a liquid from the Coffee Machine.

Encountered the Peripheral Jumper.

Used SCP-420.

Found and equipped the "Lovecraftian Locket".

Swallowed a sample of Panacea.

Encountered an Old Cowbell.

Found a Jaded Ring.

Encountered the Ghost.

Found a Blue Key.

Encountered an Old Coffin.

Encountered the Clockworks Machine.

Encountered the Creatures with Many Voices.

Encountered the Sleep Entities.

Encountered a Recursive Room.

Read the Encyclopedia of Common Diseases.

Encountered the Builder Bear.

Encountered the Atrocity Skull.

Entered Doctor Maynard's office.

Entered Doctor Harp's office.

Acquired the S-NAV Navigator Ultimate.

Acquired an Omni-level Keycard.

Didn't use console commands.

Lured the Old Man through a Tesla gate.

Escaped the Old Man's Pocket Dimension.

Encountered the Hole In The Wall.

Wore a GP-5 Gas Mask.

Beat the game on Keter difficulty.

First played the multiplayer.

Escaped the facility in breach mode.

Became MTF in breach mode.

Became scientist in breach mode.