Halo 3: What do you do when your having trouble on Legendary?

I run like hell

I hold the big X-looking button on the controller.

sit in a corner and pray that Arbie or Johnson will save me

i chuck grenades like a motherfucker and headshot grunts with grunt bday party on then jump in and start beating brutes down lol.

I throw the controller so far into the TV, I dont have to worry about halo ever again.

I chill in behind a wall and pop out to take a few shots at someone, then move back.

Get like 4 friends, and beat the mission in 15 minutes.