- If you bring The Cone (aka The Curse Detector) to the second Dark Room entrance, The Cone will form a door that leads to some kind of laboratory.

- Semper (player.mdl) can steal The Cone.

- There's actually another world behind the mirror. Well, mirrored world.

- In the mirrored world, in the next room there's a text that says "Ancient evil inside, do not enter!", break a wall with a text and you will have acces to another Dark Room.

- There are few globes cattered around the map. If throw the globe using Garvity Gun - the globe will turn into a baby-doll.

- If you bring The Radio up on the Building C it will play some nice tunes.