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Half-Life: Opposing Force Hints
How do I get to and open the valve?
1 of 5: In order for the valve to work, you need to get the vents open first.
2 of 5: To find the vent controls, go through the door labelled 03 in the control room. The passage behind it leads up to the vent controls.
3 of 5: After using the lever on the steam vent panel, you can begin figuring out how to reach the valve wheel on the opposite side of the chamber.
4 of 5: The ladder is broken, but there is some alien flora and fauna latched onto the wall just above the valve wheel.
5 of 5: Use your barnacle to pull you onto the platform with the valve controls. Turn the wheel and head back for the control room.
