This Halo 3 walkthrough is divided into 24 total pages.
You can jump to nearby pages of the game using the links above.
Cleansing - Infinite Devil Machine
At the bottom, go to the right. Now the Gravemind is talking to you.
![Halo 3 Walkthrough - Halo 3 173](halo-3-173-small.webp)
Keep going until you reach another hole down.
![Halo 3 Walkthrough - Halo 3 174](halo-3-174-small.webp)
Go to the right and follow this passage. When you enter the room the Gravemind talks again.
![Halo 3 Walkthrough - Halo 3 175](halo-3-175-small.webp)
The glowing blue thing in the back has Cortana. Walk up to it and hold RB to receive a message from Cortana.
![Halo 3 Walkthrough - Halo 3 176](halo-3-176-small.webp)
This brings the Chief to the end of the 5th mission.
More Halo 3 Walkthroughs
This Halo 3 walkthrough is divided into 24 total pages.