1.there could be this cave on the dark side of Corpus 3.There is a miner ghost and his gang of other dead miners that you have to kill.You have to get to the captain ghost miner (which is very hard).Then you have to take his rare gem that he found to this mining place to get a new item for the new worlds 

2.You would go to this place on Prato 4.You would get a group with 2 other people.You would go into the water with a harpoon.You & your group would have to put missiles in your harpoon and kill these  huge mutated Turtle, Octopus, And Shark to get these type of coins and buy this gun to blast threw Rock,Steel, and Gold.You may take the gold but no one knows what might happen.Then you discover a new world past the minerals