Billy Hatcher and the Giant Egg Cheats for GameCube

Ok, this can ONLY be done in 2player mode. First get any old animal egg that you are willing to lose. Then get youor partneer an egg that you want him to lose or to try for fun
Next get them ready to hatch and a pretty good distance from each other
So If done correctly, hatch them at the exact same time, 1 person's animal will not show up and it is like popping the other person's egg. THIS HAS TO BE DONE PRECISELY OR ELSE IT WILL NOT WORK!
This is cool and good for like Hail Mary.

Unlock Extra Characters
Chick:
Defeat the 4th level of Dino Mountain.
Rolly:
Defeat the 4th level of Pirate Island.
Ed:
Defeat the 4th level of Blizzard Castle.
Sonic egg:
To have access to one Sonic egg in every world collect all five coins in
each world.
Bonus Emblem:
To unlock an Emblem successfully complete one of the following tasks:
A) Collect all coins
B) Complete all missions with an S rank
C) Unlock the entire Egg Gallery

GBA eggs:
Certain eggs will unlock GBA mini-games when hatched. You'll have to download it into your GBA.
Game Egg Location
Chu Chu Rocket Pirate Island 2
Nights Circus Park 2
Billy Hatcher Hyper Shoot, Easy Dino Mountain 2
Billy Hatcher Hyper Shoot, Hard Sand Ruin 2
Puyo Pop Blizzard Castle 3

Extra emblems:
There are a few ways to get more emblems, including beating all missions with an "S" rank, collecting every coin and unlocking the whole Egg Gallery.
Play as Bantam Scrambled:
Beat Blizzard Castle Mission 4.
Play as Chick Poacher:
Beat Dino Mountain Mission 4.
Play as Rolly Roll:
Beat Pirate Island Mission 4.