Here is the full list of all 14 Diamo XL achievements. It takes around 1-2 hours to unlock all of the achievements on Windows.
Earn 50 Points in a single round
Earn 25 Points in a single round
Earn 75 Points in a single round
Earn 100 Points in a single round
Earn 150 Points in a single round
Earn 200 Points in a single round
Earn 250 Points in a single round
Earn 300 Points in a single round
Earn 400 Points in a single round
End a round with 42 points
Smash 100 enemies
Complete 250 Diamonds
Earn over 15,000 points total