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The Orange Box: Portal Hints
What can I do about this turret ambush?
1 of 7: It's only two turrets, so it shouldn't be too hard.
2 of 7: They drop down onto the floor as you move forward, so what could you do to quickly dispose of them?
3 of 7: The floor is concrete, by the way.
4 of 7: So shoot some portals under them!
5 of 7: Quickly shoot a blue portal under the left one as soon as they drop down, and then under the right one right afterward.
6 of 7: Or shoot a blue portal under the left one and an orange portal under the right one.
7 of 7: Either way, they should be knocked over without being able to shoot you much if at all.