She always spawns with the Gravity Gun, Alyx Gun, Shotgun, and the Emp Tool. The Gravity Gun can be used to disable Combine Generators. Alyx also regenerators ammo for the Alyx Gun.

Near the end of Entanglement there's a setpiece where you use turrets to defend Alyx while she resets a teleporter, then jump in with her to escape the waves of Combine soldiers flooding in. Which ...

Near the end of Entanglement there's a setpiece where you use turrets to defend Alyx while she resets a teleporter, then jump in with her to escape the waves of Combine soldiers flooding in.