Best Levels on Halo 3

You get to drive a warthog, a warthog with a gauss cannon, another type of warthog, a mongoose 3 times, ghosts bunch of times, a scorpion, hornets twice, a chopper and also you get the spartan laser

Breach the barrier. Stop Truth.

Light the ring. Destroy the Flood.

Search the waste for the Cartographer.

The scarab tanks and armored personnel carriers and the rest of the best thing ever is sniper and rocket launchers

Reclaim the city. Make a hole.

Rise up. Start the fight.

Cleanse High Charity. Save Cortana.

Stop the infestation. Find Cortana.

Clear the base, whatever it takes.