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Half-Life: Opposing Force Hints
How do I cross the open furnace pipes/vents?
1 of 5: The pipes and vents from the furnace are shooting bursts of flames. Obviously, these flamebursts can kill you.
2 of 5: Luckily, the bursts occur at regular intervals.
3 of 5: Wait until the flamebursts have slightly dissipated before you try to jump or run across.
4 of 5: The flames do not have to be entirely gone to successfully cross particular areas, but do wait for the flames to be as weak as possible.
5 of 5: One of the areas you must cross never fully clears of flames. It is just a matter of timing your jump or run in order to minimize your health loss.
