Let's see here.
A) Save me. (Mayhem 29) 7 characters, only 6 of them letters.
B) This one took a bit of thought, but I think it's called "ICE SPY". It's one of the later have Wild stages. If I have to guess, I think it's Wild 14.
C) No idea, honestly. If I were to guess, I vaguely recall a level called "Libra", though I don't remember where it is in the sets at all.