Marceline fights the various significant vampires from Netflix Castlevania, including those in Nocturne such as we know them so far in the following matches:
1. One at a time
2. Best possible combination of any three that you think can win together
3. All at once.
All fights take place in Dracula's castle after it's been grounded. Since we don't really have feats for a fully fed Dracula, we'll just assume he's in roughly the state he was when he fought Sypha, Trevor, and Alucard.