I read the whole series, or at least the first 21 parts; I'm not sure if you're planning on making more. I'm afraid the plot is only barely cohesive, and the strips in general lack humor. Some suggestions:
1. Plan out a series before you start writing. Too many things in your strips seem to happen for no reason at all, other than that you wanted to write about them. It's very difficult to follow, and it makes me wonder why I should care about the story. For example, in part 13, with no preface or explanation, two of your characters find themselves in jail and then immediately break out. What's the point? If that's somewhere you want to go with your story, think about what course of events might lead you there, what to do once you get there, and how it affects the rest of the story.
2. Try to make at least one good joke per strip. Plan the joke before you start writing the strip. If your joke doesn't work, rewrite the strip so it does. I'm assuming you're trying to be funny here -- it's okay if you don't want to be, but it looks like you do, so put some more effort into it. Don't rely on random and bizarre events to provide comedy. Randomness or incongruity can be powerful tools if you use them right, but the simple fact of randomness is not in itself amusing. My favorite part of your strips so far is the idea of the priest as a summoned monster: it makes light of the idea of summoning monsters, and plays on people's perceptions of priests, what powers they have, whether they're truly good or evil.
3. Don't use the narration boxes to explain yourself. As a general rule, in fact, you should use the narration boxes as sparingly as possible. They have their place, but they can easily become distracting and pointless. If your strip can't stand on its own without explanation, you're probably trying to do too much at one time, or being too obscure. Let the characters' actions and dialogue speak for themselves. In a three-panel, two-character format, a certain degree of simplicity and minimalism is required.
4. Work on writing realistic dialogue. Specifically, don't use internet shorthand, and don't have your characters say things like "if you don't talk/join us...." Don't make it difficult for your audience to imagine someone actually saying these things. It's jarring, and distracts the reader from the story and the joke. Dialogue is one of those things that the reader should never actually be aware of, if you do it right.
If you can take some of this advice, I think you'll start seeing an improvement in the quality of your strips. Keep at it, and welcome to Stripcreator.