If you are running low on lives, repeat Nsanity beach over & over for easy lives, but for lots of lives but harder, get the green gem from the lost city and go to Castle Machinery. A ggem path appeaes at the start with 27 (i think) lives. Then the exit takes you to the end of the level!
Papu Papu: First he will slam his staff onto the floor. Jump on his hea and avoid his spin attack, then jump on his head again. One more jump kills him, but DON'T let himj fall on you when he's dead. Jump on the chair to avoid the spin attack. Papu has three health points
Ripper Roo: The crazy roo will bounce about in set patterns. It is easy to dodge him. Set off the TnT countdown and hope the mental roo is tricked into being blown up. Be careful not to drown!
Pattern 1: the centre tile, the bottom left tile and the bottom right tile.
Pattern 2: The centre left tile, the centre tile, the centre right tile and the centre bottom tile.
Pattern 3: the centre top tile, the centre right tile, the centre bottom tile and the centre left tile. Ripper Roo has three health points
Koala Kong: Dodge the TNTs and Kong's rocks. When a rock doesn't break, spin it to Kong but make sure no mine cart is protecting him. Koala Kong has four health points
Pinstripe: Hide behind a chair whilst he fires his tommy gun randomly round his office until he stops to reload. You have a short time to spin him so becareful. Pinstripe has six health points
Dr. Nitrus Brio: Brio will throw green or red beakers at you. Green beakers summon blob monsters. Jump on their heads to lower brios health, red beaker are attack beakers. Once only three health points remain, Nitrus will drink his potion and turn into the NCredible Brio hulk monster (slightly scary for a 5 year old D:). Jump on the blocks and spin his head three times to defeat him. Nitrus Brio has nine health points.
Dr. Neo Cortex: The demented, mad scientist will shoot lasers at you. There are 3 colours: the standard Red laser, Green lasers, the lasers you must spin back to damge him and the trickery Blue laser, which reappear at the sides of the screen and may move up and down to attack you again. His pace of shooting is normal, but when he has two health points he will launch a barrage of red lasers and few greens, so be careful. On the last health point he sort of gives up: shooting a single green laser to finish him. Then claim your prize: Tawna Bandicoot! Neo Cortex has five health points.
I hope I helped, some bosses are hard to work out how to defeat. If you could be bothered to read it all, you get a reward: if you have 100%ed the game and are wondering so, thats it? you must go to the great hall and jump the path of gems and you will fly away with Tawna. Happy ending. You also get a special epilogue credits sequence, informing you what happened to the boss characters <img src="http://i.neoseeker.com/d/icons/smile.gif" border=0 vspace=2 alt="" />