This Portal walkthrough is divided into 16 total pages.
You can jump to nearby pages of the game using the links above.
Boss Fight
![Portal Walkthrough - Portal 67](portal-67-small.webp)
It's time to confront Glados. Wait until she drops the purple core.
![Portal Walkthrough - Portal 68](portal-68-small.webp)
Set up portals between the incinerator and the button. Press the button and throw the purple core into it.
![Portal Walkthrough - Portal 69](portal-69-small.webp)
Use portals to line up the rocket turret and trick it to shoot Glados, another core will fall out.
![Portal Walkthrough - Portal 70](portal-70-small.webp)
Grab this yellow core and burn it like the first. Line up the rocket turret and hit her again.
![Portal Walkthrough - Portal 71](portal-71-small.webp)
The third core is up here, grab it, burn it, hit her again.
![Portal Walkthrough - Portal 72](portal-72-small.webp)
This is the last core. Fling yourself to grab it, and throw it in the incinerator like all the rest.
![Portal Walkthrough - Portal 73](portal-73-small.webp)
Congratulations! Glados is beaten and you've finished Portal!
More Portal Walkthroughs
This Portal walkthrough is divided into 16 total pages.