Just saw the author’s update notes, here’s a quick rundown. The tutorial’s been moved from the model page to a separate article—scroll down and you’ll find the link.
Author says they’ve been working on another version lately, so they’re just gonna drop it as a close relative of this model. The model merging workflow is pretty simple and fast now, basically as smooth as back in the SD1.5 days. No specific params posted, so I’m not gonna make stuff up—gonna download it myself, try generating some images, and report back. If you’re into this art style, keep an eye out.