Here is the full list of all 11 Rogue Port - there are Red Nightmare achievements.
Unlocked via Secret Code
You Successfully Harvested Turnips!
You Successfully Harvested Corn!
You Successfully Harvested Tomatoes!
You Successfully Harvested Carrots!
You have Defeated the Final Boss!
You Saved your 2nd friend!
You Saved your 3rd Friend!
You Saved your 1st Friend!
You got a Perfect Score on Star Shot!
Your Dog Joined the Team!