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You're in the early-to-mid-game playing as the Beta race with a Human ally against two Goo players on Barricade Run. They have lined the central ridges with Tempests and you have the middle chokepoint walled off with mounted Predators. Neither of you have current vision of their Mothers, but assume they each have sizable access to catalyst at the south spawn points.
What units and upgrades do you tech into? What do you instruct your ally to build?
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