There are small cheats in Halo!!!!!!!!

On the 5th level, Assult in the control room, when you get to the first bridge, look left, jump on the edge of the bridge, slide off, walk to the bottom of the ledge, jump off and die, right before you respawn, use the other player and slide off. If you do it right you'll be on the final ledge. Look for a boulder and slide down to it. If you hit it right you'll still be alive. You can go through the rest of the level with no more enemies.

(Can only be done on coop)

need more small cheats? Ask me, There are a few more.

What are your other "small cheats", or should I say tricks? You can go to ibonk and find videos of Halo tricks or http://halo.bungie.org/ to find the you mentioned.