Here is the full list of all 12 Mola mola achievements.
You finally learned the number 3！
You are legendary!
Advancing toward the legendary level.
Human beings are always greedy.
You are already a qualified driver.
Still not satisfied?
Deep~Deep~
Keep driving!
You are a lot skilled now.
You are now bigger than the second level but have not yet reached level four.
You are now a second-level driver.
You are new driver now!