Here is the full list of all 20 Flappy Bat achievements.
Earn One Thousand Points
Earn Five Thousand Points
Earn Ten Thousand Points
Earn Twenty Five Thousand Points
Earn Fifty Thousand Points
Earn Seventy Five Thousand Points
Earn One Hundred Thousand Points
Earn One Hundred and Twenty Five Thousand Points
Earn One Hundred and Fifty Thousand Points
Earn One Hundred and Seventy Five Thousand Points
Earn Two Hundred Thousand Points
Earn Two Hundred and Fifty Thousand Points
Earn Three Hundred Thousand Points
Earn Four Hundred Thousand Points
Earn Five Hundred Thousand Points
Earn Six Hundred Thousand Points
Earn Seven Hundred Thousand Points
Earn Eight Hundred Thousand Points
Earn Nine Hundred Thousand Points
Earn One Million Points