Here is the full list of all 32 Midnight Legends achievements.
Defeat Diesel.
Defeat Ray.
Defeat Stan.
Defeat Samyr.
Defeat Alice.
Defeat Paul.
Defeat Dylan.
Defeat Afiya.
Defeat Duncan.
Defeat Samy.
Defeat Hideo.
Defeat Max.
Listen to the first dialogue with Cassie in the garage.
Fully upgrade any car.
Win all types of competitions.
Win the first race.
Spend 50,000 cr in the garage.
Install all 1st level upgrades on the car.
Buy five cars of any class.
Defeat 6 Midnight Legends.
Use strafe 50 times.
Use the shield 50 times.
Buy a B class car.
Buy a class A car.
Buy an S class car.
Find the first collectible.
Find 5 collectibles.
Find 25 collectibles.
Find all collectibles.
Win the Boss Championship
Complete 5 quests from Ripley.
Complete 20 missions from Ripley.