What can you do after you beat Jak 3

DO whatever you want make a new file or something After you finish the game you can buy new secrets by finding some of the eggs. There is a secret that lets you play the game all over again. just find enough Precursor eggs and buy this secret. You'll play the game all over again but have all weapons and armour. Unfortunately the Light Eco powers don't become available until you find them. (It's just like the Ratchet and Clank games after you win)