I've only got one more planned - it certainly doesn't conclude the story at all, I just haven't had any ideas for where to go after that!
I've got a lot of general thoughts on some kind of a plot, and three other characters drawn up who I want to flesh out and introduce, but it's keeping the dialogue light/humourous enough that I'm struggling with. I can't just make D&D punchline gags because they're all 200% overdone and I don't even know the rules well enough, and I need to build up a fair bunch more comics/characterisation before I can start making internally referential humour within the comic world either.