Ok so push the button to open the disc holder thingy and go to settings and go to clock. set everything to seven date time everything. then put halo2 in and get someone to go on to split screen. go to the place that looks like a farris wheel and stuff. go to the beach and where the sign says danger no swimming it will have a sign that says are you finding ling ling's head and it will show this dogs' head on a trophy mound and stuff but the moral to this question is can u find it its hard and takes a long freaking time.