Quickly press Start multiple times at the main menu to unlock the In the Gutter, Sea Sick, Blizzard Battle, and Lost at Sea levels. Alternately, get 120 Gold Cards on any difficulty setting.
To view the credits, defeat Altair. Defeat Sirius the second time to get the other ending.
To make a artificial Eggy just go to a stage where the screen freezes when catching something or pressing a switch, go for one remote bomb and before you press the switch or catch something set a remote bomb, and move it one centimeter before you get the thing or press it.Then,explode the bomb and immediately get or press the thing to make a artificial eggy.