Shadow76

THERE IS TO CO-OPERATIVE IN PIKMIN 2 SHEINY.

First go to perplexing pool go down the hill and you will see a tree trunk base go in it and you will see a cave called the Citadel of Spiders.

It will tell you wha kinds of Pikmin you need now go get pikmin and go down in the cave keep going lower and lower and lower till you get to the final floor find a big arena and walk around the area.

A giant spider will drop down (It scared the heck out of me) avoid its crushing feet and wait for it to dip its center down throw pikmin on its center.

Call them back when he shakes them off and wait for him to dip again and throw some pikmin on its center. Repeat till you finish it.

It will drop a key carry the key back to the ship and it unlocks challenge mode which you can play with a friend and work together its loads of fun.