Here is the full list of all 21 Ultimate Racing 2D achievements.
Win a race for the first time.
Win a race on hard difficulty (or higher).
Win a race on ultimate difficulty.
Get the fastest time in qualifying.
Get the fastest time in qualifying with hard difficulty (or higher).
Get the fastest time in qualifying with ultimate difficulty.
Win a championship for the first time.
Win a championship on hard difficulty (or higher).
Win a championship with ultimate difficulty.
Collect 1,000 coins in coin mode.
Collect 100,000 coins in coin mode.
Collect 1,000,000,000 coins in coin mode.
Complete your team's objective in season mode.
Complete your team's objective in season mode with hard difficulty (or higher).
Complete your team's objective in season mode with ultimate difficulty.
Complete 10 seasons in season mode.
Complete lvl 1 in event mode.
Complete event mode lvl 10.
Complete the final event in event mode.
Complete an event mode lvl with hard difficulty (or higher).
Complete an event mode lvl with ultimate difficulty.