This Portal walkthrough is divided into 16 total pages.
9 - Chapter 9
10 - Chapter 10
11 - Chapter 11
12 - Escape 1
13 - Escape 2
14 - Escape 3
15 - Escape 4
16 - Boss Fight
You can jump to nearby pages of the game using the links above.
Escape 4
Portal up into the sewer area and then above ground.
Portal into the turret shelters behind them and take them out one by one. Then fling yourself up very high to the next bit.
Quickly portal the two new turrets out of the way and portal up further in the roof.
More Portal Walkthroughs
This Portal walkthrough is divided into 16 total pages.
9 - Chapter 9
10 - Chapter 10
11 - Chapter 11
12 - Escape 1
13 - Escape 2
14 - Escape 3
15 - Escape 4
16 - Boss Fight
