To go weaponless in campaign, you will to start on The Covenant and you will need rockets and energy swords. We currently only know where 1 rocket launcher is on the map. If you know where there are other rockets, please let us know. Once you have the rockets and energy swords, you will need to do the Time Travel Glitch. After that, you will be weaponless. This glitch is great for making campaign based machinimas. You can stay weaponless all the way through the rest of the Halo 3 campaign …

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4. Halo 3 Glitch – Half Infected Brutes
5. Halo 3 – Underwater On The Covenant