Finally got around to playing this myself. I had already seen a sizable chunk of the game via stream (from the nun battle onwards), and already had a very good impression of what I saw, but there are some good jokes in the first half (and, you know, setup and story stuff, which some people consider important), so playing through it in its entirety was a good time investment.
Having now engaged with the actual gameplay part of the game I can say that the battles are really fun! Some really interesting synergy between the three character's skills. The Marr/Z combination is especially effective, since Z has a lot of HP and Marr can force her to facetank attacks (and he absolutely would do that, the little asshat), which in turn lets her take advantage of a skill that grows more powerful the less HP she has remaining... Though the best use of her turn is usually Rush, which does insane amounts of damage.
Overall an excellent little game. Very charming graphics, both the sprite artwork and the face portraits. The characters, protagonists and opponents alike are bursting with personality in spite of the story's quick pace, which is a credit to the writing. A couple lines of dialogue was all it took to make me invested and intrigued about what their fictional universe was like, and what sort of villainous or tragic death brought them to this place.
I will definitely keep an eye open for any upcoming games by Melon Kid and friends!