Hell no I haven't beat Halo 3!
I just started it last night. I've been playing COD:4 and it's a BLAST!!! I did it on the 2nd Medium level, that wasn't too tough. Now I'm doing it on the hardest, and it's pretty difficult. You have to REALLY aim well and fire like crazy in the hot spots. In the TV Station I got hammered down for about 15 minutes stuck in once spot of the room. When I died, I got a little trigger happy and just started popping off clips while pressing the aim button. It auto-aims on the next target if it's within an inch or so of the sight, so I just keep pressing that and firing. Works great until I run out of 7.62 ammo, then I go to the shotgun and start pumping out shells!
If you have a 360, get Call of Duty 4. It's awesome!
