You’ll see the control room and a box blocking a door. Borealis- On the map when you attach PotatOS to the portal gun, go above that room.go in the room and you’ll se Rattmann graffiti. If you put a hard light bridge portal near it, there is a panel. Army of Cans- In one of the chambers in Chapter 3, there is a security camera.If you fall into the diagonal wall and go through the portal surface, you’ll see an office with graffiti. Rattmann Smooth Jazz Graffiti- In the Chamber where there’s garbage, there is a portal surface near the diagonal walls.You can enter mat_fullbright 1 on the console and, you can see it. If you look to the left, you’ll see a woman.
