Here is the full list of all 15 Best Friend Forever achievements.
Reach Level 10 in your dog’s Smarts trait.
Go on a date with every love interest.
Complete Maribel’s romance route.
Reach Level 10 in your dog’s Manners trait.
Complete Sacha’s romance route.
Reach Level 10 in your dog’s Sociability trait.
Reach Level 10 in your dog’s Trust trait.
Become the valedictorian of your Paws Academy class.
Complete Anders’ romance route.
Complete Robin’s romance route.
Pat the dog a thousand times. You okay over there, buddy?
Complete Astrid’s romance route.
Reach Level 10 in your dog’s Fitness trait.
Adopt your first best friend forever.
Complete Felix’s romance route.