having trouble With Halo 3?

I am about to buy a xbox and halo 3 but ive heard that people have been having troubles with it, if your having trouble with halo 3 list your problem here

I havea problem with completing levels on coop. When i go replay levels that ive already beaten for fun, it says that i havnt beated them(there is no legendary symbol/picture where there should be). Im wondering if it is because ive beaten those levels on coop and not by myself. The only section of a level that has the legendary picture is the very start of the game which was the only part where i played alone and not in coop.wats goin on?

i have a problem with halo3. its crap. a terriable buy. cant believe i spent £40 on it. i was thinking yeahhh everyone seems to like it i wanna know why! so i bought it. and to my absolute suprise i thought the game was very basic. you can barley hear your gun when you shoot it, takes so much ammo to kill things, you will run out of ammo alot, the crosshair thingy isnt actually in the middle of the screen (what the hell!!!!!)

i cant believe this game got all the good reviews from pretty much everyone. personally id rather play medal of honour rising sun.

I only got one, Adictive :(Thigeic

yea i hear u on that one man.

go pick it up & have fun. just remember to get the warrenty with your 360HOLYWOOD444

no need to. microsoft gives a 3 year warranty on all 360's now.

[QUOTE="HOLYWOOD444"]go pick it up & have fun. just remember to get the warrenty with your 360OfficialBed

no need to. microsoft gives a 3 year warranty on all 360's now.

but if u get the warranty u dont have to wait a month or whatever it is to get it back u can just go to the store n get another 360