Mini Ninjas - saved files and fossil fighters - Final battle

Hi,can someone tell me how to save the game? I can't save the game.... is it an auto saved game? Because i've to keep repeating from the starts.. ??? ???On the other hand, i've won the final battle and seems the game has ended. But what's going to happened next? going on digging?

MN is auto save after every chapter, so use RTS. I dont play FF so idk.