Dangerous Depths

Underground is the ONLY cave in Pikmin: Attack of the Breadbugs. Mostly, tough enemies lurk in the dark recesses of this cave, so strong Pikmin variants are recommended here. There are four holes to enter different parts of the cave in the Outside. Onions can come down with you, so you have something to replenish your Pikmin army. There are five chambers in this cave. it will be listed underneath.

Normal Chamber
No enemies are here because of the light.

Combat Chamber
If you are willing, you can enter this deadly, enemy-fighting, game.

Dark Recesses Chamber
This is the darkest part of the chamber, so be sure to bring a few candles along for the trip! Light will be a must-need element here, so you can light the torches you come by. If you are a beginner, it is not advised to be here. Just watch out for the strong enemies!

Fiery Chamber
This chamber is HOT!!! Bring Red Pikmin along, because only THEY can stand the heat. All fiery enemies are here, so BE CAREFUL!!! Because those enemies can deplete you army number fast. This is the only place to get to the Special Chamber, so walk through this chamber and you will be face-to-face with the Special Chamber, only after you have beaten the game twice.

Special Chamber
This chamber is mysteriously sealed off by an Unknown Force of some kind, so you cannot continue any further from there. Try beating the game twice, then return here. You can then enter the Special Chamber, but when you enter, all you see is a few bones here and there. An electrified metal door suddenly slams shut from behind the Captains and the Pikmin squad. Then, a monster suddenly drops from the ceiling. Its an enemy that has no known name yet, so it is called a "???". Kill the monster after the hard battle, and an Escape Geyser rises from the ground. Swarm it to make it active, and ride to the Outside.