I think you’re safe if the crowd carnage panel on page 20 and 25 didn’t bother you as much as the leech transformation. The bloody fight against the leech plays a part throughout the entire arc, so there’s more of the former ahead.
This was one of my favorite chapters in the entire series. Nice touch of body horror, gorgeous fight scenes, good pacing.
Rereading this reminded me of a question: How much of what happened here was Engendil’s intention? In the beginning, he tells the perv that he’s turning him into slime so that he can escape through the window. Then, when the perv stretches the circle of his hand outside the magic barrier, the circle activates and its effect somehow reacts with this leech thing that was part of the castle defenses and creates mega leech. Engendil acts surprised and claims he didn’t know this would happen. Do we believe him? I don’t see how the initial plan would have benefitted him much, because it allowed only the perv to escape.