Bad ending 2 conditions:
- At Chapter 4
- When you're still friends with Tiffani
- And you've sold under 50 milk to Zoey
- And you've sold OVER 12 milk to Zoey
Do the above and it will work!
Bad Ending 6, when Tiffani asks you for 200 milk, the next milking select any cowgirl and don't do anything at all so you produce 0 milk. Just watch the milking screen and don't interact at all. It will trigger bad ending 6.