There's all three, at least - though I don't doubt we'll have many more.

[This ship is good people... And also, they're all dumb and have no confidence in their ability to solve things without hints, it's fine.]

Judging by how many trails of blood there were, I'd say that's probably true. It looks like the final blow may have been delivered in the clinic... Hizamaru and I didn't get the chance to go through the drawers or cabinets there, so we'll want to go back tomorrow. He found a blade there, though - the colorful one.