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Halo2 Xbox tip details

Another way to kill Tartarus (requires aiming)

When in the last section, just after the Index has been inserted, use a few grenades to get rid of the remaining Brutes on the edge of the walkway. When they are gone Tartarus will leap onto the structure below. STAY WHERE YOU ARE for the moment. Wait until one of the orbiting platforms comes round, and jump onto it. You will need to stand on the one connected to the ceiling to avoid getting pushed off. You can then take Tartarus out with a Covenant Carbine, or a Beam Rifle, out of harm's way. This will require a few head shots. Remember to only shoot at him when Johnston takes his shield down.
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