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Half-Life 2 Hints
Pick-a-Pipe Strategy
1 of 6: As in some of the earlier fast zombie combats, these zombies get to you by climbing up red drain pipes, and you can easily head-shot them by standing at the edge of the roof next to a drain pipe and looking down.
2 of 6: There are two red drain pipes attached to your rooftop ledge, one on the left and one on the right.
3 of 6: However, the zombies don't climb them in a rigid, preset pattern -- they can decide which one they want to climb as they approach.
4 of 6: They're *much* more likely to go to a particular drain pipe if you stand right next to the top of it all the time, so pick one and stay there. (This works especially well with the drain pipe on the right.)
5 of 6: Do listen for the other drain pipe to start rattling -- it shouldn't ever, but if it does, get over there fast!
6 of 6: As soon as Grigori's cart arrives, run for it and get it going as quickly as you can (so you can skip shooting the last few zombies).
