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The Orange Box: Portal Hints

Chapter 4: Testchamber 10

1 of 4:
In Chamber 10, you'll be using the fact that portals conserve momentum to get across some gaps.
2 of 4:
Ride the elevator up to Chamber 11, where you'll need to pick up a portal gun upgrade that'll allow you to open orange portals, too.
- How can I get to the portal gun upgrade?
- How can I leave this chamber once I have the upgrade?
3 of 4:
In Chamber 12, you'll need to do the old "fling thing" again to get yourself up onto higher floor sections.
4 of 4: The elevator past Chamber 12 will take you to Chapter 5: Testchamber 13.

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