Unlocking missing stages?

[S. P. Gardebiter]

Hello,
is there a chance to Unlock the Temple of Ravum and the final "???" stage?
Or can you access them in offline multiplayer only with an action replay?

[Ryna]

Which stage was Temple of Ravum? I forget which one that is.

To address your original question, I don't think the ??? stage can be accessed in offline mode through legitimate methods.

[S. P. Gardebiter]

Which stage was Temple of Ravum? I forget which one that is.

Ravum Aedes Sacra.

[Cranberry]

You can't unlock either stage for play. They are only available in Story mode.

[Eyce_Theon]

Or can you access them in offline multiplayer only with an action replay?

An AR can access extra stages such as those, Castor/Pollux's areas, and an unused Cyber stage (There are others listed, but they FSOD you).

That is the only way, at least for now.