Forum:Can anyone help me with this game please?

so, i have sonic unleashed for the PS3 and i completed tornado act 2, i completed eggmanland, i completed egg dragoon, then i got to the first battle with dark gaia and completed it. the sequence then took me to the second battle with dark gaia where sonic is super sonic, and because i had been playing for so long my hands and back where aching badly so i stopped playing. BIG MISTAKE. i went back to the world map to see that my eggmanland completetion and my defeat of the egg dragoon was saved but nothing else. when i played through eggmanland and defeated egg dragoon again it just took me back to the world map. i went back and searched in shamar where the professor was but it was no use. does anyone have any clue what may have happened or is anyone able to tell me what i can maybe do?????!!!!! please i am pulling my hair out over this one!!!!!!!!!!!!!! i cant complete the game and restore the final section of earth, please help!!!!!!!