How do you unlock Subterranea in Super Hero Squad?

Answer 1

this is the only arena i do not have but i think i know how to unlock it go to hulks challenge and collect 100 of those white things just to make it clear its really 1000

white things but that's because they add like 10 things at a time

Answer 2

To unlock Subterranea in Super Hero Squad, first complete the Ronan the Accuser missions in the game. Once these missions are completed, Subterranea will become accessible for you to explore and play.

Answer 3

you have to get worverein and capenamerica and you get sabertooth on Wii