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Half-Life 2 Hints
Sentry and Soldier Tips
1 of 5: The sentry gun is the first thing you come to on the stairs.
2 of 5: After you go up two stair segments, you'll be able to see the top of the sentry up above you.
3 of 5: Either toss a frag grenade onto its walkway to knock it over, or quickly run up to it and knock it over before it can shoot you or your squad.
4 of 5: When you get up to the sentry's spot, the two soldiers higher up will see you and start shooting.
5 of 5: Stand in a safe corner and send your squad further up the stairs to shoot down the soldiers for you.