Defeat the following bosses by performing the corresponding strategies:
Island 1: Papu Papu To defeat Papu, jump on top of his head while he swings his staff. (Repeat three times)
Island 2: Ripper Roo To defeat Roo, detonate the Nitro boxes when he moves close to them. (Repeat three times)
Island 3: Koala King To beat this boss, evade the first three boulders he hurls at you and spin-attack the fourth one. The rock will hit him! (Repeat four times)
Island 4: Pinstripe To defeat Pinstripe, hide behind the furniture while he shoots his Tommy Gun from the tabletops. When climbs down to reload, spin attack him. (Repeat four times)
Island 5: Dr. Nitrus Brio To beat this boss, evade the red and green beaker bombs he throws. Spin-attack the green ooze on the floor. (Attacking the blobs will depleate his energy.) When Dr. Brio has three energy bars left, he will turn into a monster. Jump from the platform and spin-attack his head.
Island 6: Dr. Neo Cortex To defeat Cortex, evade his red and blue attacks, while spinning the green ones back at him. (By doing so, Crash assembles an Orb over the doctor's head. When it is complete, it falls and kills him.)
To activate the debug menu, hold Up + X while the Naughty Dog logo is visible and keep holding until the title screen appears. Then, hold d-pad Left while pressing SQUARE, CIRCLE, SQUARE, START. During the game, pause and press: DOWN, X (26), DOWN. (A snorting sound confirms correct entry.) Push Select to display the debug menu.
After completing the game, go back to the great hall. At the start, go left and jump on the gem there. Then, there will be a bunch more you have to jump on. At the end you will see Crash's girlfriend out on the balcony.Go over to her and it will show you what happened to the bosses after you defeated them.