Final Fantasy XIII

It is a diffucult game and i require some help from anyone who is willing to give it. I am stuck at part where u fight Lightnings spirit shing and i need some tatics thrown at me. Please help.

With the copy i got, after the tutoral and the battle between three groups of bad guys. When i pass the floating ball that gives you a potion, my game goes funny. the screen goes black but i can still hear the background noice, the fighting in the back groundI cant do anything and im just wondering if this has happened to anyone else?

That Eidolon guide is bad. A: Odin is much harder than Shiva; you can't die fighting the sisters unless you don't fill the gauge. I did nothing special or difficult, and had over 1,000 cp in my level-up bank, as it were, when I fought them, and I got them the second time. Just go Sentinel and Guard whenever she starts charging her big attack, then go back to attacking. VERY easy. Odin is easier done by simply staying on Medic and healing everything he does. He hits hard enough that a Commando/Ravager team can and will just die sometimes. Do nothing but defend and I don't think it's actually possible to lose to Odin.