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Half-Life: Opposing Force Hints
How do I get past the electrical bolts shooting off of the fan's axle?
1 of 5: Three bolts jump off of the fan's axle.
2 of 5: Notice that some of the bolts switch on and off.
3 of 5: The one immediately to your left will never turn off, but the one immediately to your right will, and so will the electrical bolt farthest from you.
4 of 5: Hence, it is just a matter of moving past the individual bolts when they are off.
5 of 5: Do not attempt to make one swift motion towards the opposite air duct. Instead, move past one of the bolts and wait until the other shuts off. The two switching bolts are never off at the same time.
