idk how to do Cheater Cheater, Flower Eater, but I do remember how to get nightmares:
- talk to hawkfeather
- keep talking to beestripe until she has no new dialouge/only says `There isn`t much more I can tell you.`
- talk to hawkfeather. again.
- hawkfeather will point in a specific direction, and a white arrow will appear on the right side of her
- Talk to Crystal (the grey and white she-cat that'll tell you a backstory)
- After Crystal has no new dialouge/only says `Seriously, if you need some food, let me know` go back to Hawkfeather and talk to her.
And once you've done all that you officially have the nightmares achievement!