Here is the full list of all 50 Ridge Racer Unbounded achievements.
Win an 8 player multiplayer race with the Crinale.
Frag the same racer three times in one multiplayer race.
Finish 1st in an 8 player multiplayer race without using boost.
Finish 1st in 50 multiplayer races.
Finish 1st in an 8 player multiplayer race without fragging anyone.
Publish a city.
Publish a city with 5 events.
Dominate 50 challenge events.
Dominate 10 challenge events.
Multiplayer. Frag 10 cars in one 8 player Domination Race.
Win all 5 events in an 8 player City Domination match.