Survival mode (vs.) sounds very amazing too. Whether people organize a match as one on one,
teams (if possible in vs.), or a 6 players free for all, fighting opponents controlled by players will feel very new compared to dealing with a.i. opponents. Imagine smarter and more dangerous versions of the doppleganger boss fights!

Castlevania veterans skills will be put to the ultimate test!
Friends might organize special challenges, such as one player trying to defeat the other 5 by themselves. Or maybe mimic something similiar to the Fake Trevor, Grant and Sypha boss battles
from SOTN and PoR.
For example, it would be interesting to see Alucard and Shanoa vs. Jonathan, Charlotte, and Soma.
Then if Alucard and Shanoa survive that, they can fight each other afterwards.

(or maybe Jonathan and Charlotte vs. Alucard, Shanoa and Soma.)
Or perhaps Alucard vs. 5 Soma players? So many possible combinations!
