Here is the full list of all 24 Neon City Riders achievements.
Defeat 100 members of The Audiobats
Defeat 100 members of the Undead Laser Ravens
Defeat 100 members of the Mutant Scale Brotherhood
Defeat 100 members of the Rusty Eagle Warlords
Defeat 100 enemies
Defeat 500 enemies
Defeat 1000 enemies
Discover all the fast travel booths
Eat all kind of foods at Neon City
Drink all kind of beverages at Neon City
Get the four gang costumes
Recruit all the Neon City Riders members
Get all the drones
Defeat Grand Master Thunder without recovering your health
Defeat King Crusher without recovering your health
Defeat Chief Nova without recovering your health
Recruit Grand Master Thunder
Recruit Mother Raven
Recruit King Crusher
Recruit Chief Nova
Recruit all four gang bosses
Get the good ending
Get the best ending
Defeat Mother Raven without recovering your health