Here is the full list of all 12 Bouldeurdache achievements.
Play the OMG turbo mode
Collect a diamond
Die for the 1st time
Beat the last level and watch the credits
Dig 30000 dirt blocks
Trigger a magic wall
Make amoeba turn solid as a rock
Make amoeba turn solid as a diamond
Reach a total of 9 lives
Make 100 amoeba turn solid as a diamond at once
Turn a butterfly into diamonds
Collect 1000 diamonds