boss killing thing

so i killed leviathan and got to last resting stop. what is the next boss? i couldnt go to next stage because every1 in my party died and left.

what happens if you beat the whole boss killing quest?

After Leviathan is Papulatus (only 1st body, no 2nd body spawns). After Pap is Right Pianus. That's the end of the PQ. I soloed it my first try this morning. Nothing special happens when you beat it. You just get a lot of Agent points.

thx