I'd like to start routing this, but I need to figure out the rules first. What do you think the criteria for a good ending would be? I'm thinking it would be based on the movie at the end - obtaining the best (or one of the best) texts for each shown slide.

From looking at the WoL wiki, I think the criteria would be

1. Complete the main quest with whatever's fastest
2. Fill Dirtwater with 4 shops (4-6 makes Dirtwater a thriving metropolis)
3. Trap Duke Bovinicus without being Cowrrupted
4. Seal Roberto

There are several other slides that CAN be shown, depending on circumstances, so the run would also need to avoid situations that add to the slideshow unless what you're adding is also positive (like Buffalo Bufallo Buffalo Bill opening his restaurant). Since it's based off of the slideshow, ending would be at the end of the slideshow, which would also encourage avoiding sidequests.

What do you think of this definition? Is there anything that you would add? Does it sound OK to make a good ending that doesn't include helping all of the optional NPCs?