It might be tough to tell with one of the current plots (the psychopathic murders happening in town) -- but murderhobo'ing is actually not something we want to see in Song of Avaria. In fact, there are a lot of expectations for fair play around being an antagonist.
If you're going to kill an established NPC (rather than one you fished or found at the end of a game trail or bred on a farm) then you should have ample reason for doing so. You should have story lead-up, involving developments in your story arc, thoughts, and feelings about what you're doing. You should query that NPC so that there can be an adequate response.
If you do kill an established NPC, you should definitely not take the corpse immediately to another NPC and challenge that other NPC with the corpse under the pretense that this is a legitimate story when the other NPC is not even being animated to react properly.
For the purpose of story, any NPC is just as important as a PC. Any VNPC is just as important as a PC. Animals are people too, even if human laws don't always see it that way. When you pursue story actions, you can expect story consequences, and hopefully it will be fun for everyone. What is not fun for everyone... is random destruction. So, obviously don't do that.
TLDR: have some respect for the story. It's fine to be a murderer. Not fine to be a murderhobo.