Here is the full list of all 21 Dr. Pills achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
Complete level 10
Collect 10000 points
Complete level 5
Collect 5000 points
Kill the azure virus
Kill the orange virus
Complete the orange line
Kill the blue virus
Complete the azure line
Kill the purple virus
Complete the purple line
Kill the yellow virus
Complete the yellow line
Complete the blue line
Kill the green virus
Get to level 2
Complete the green line
Collect 500 points
Kill the red virus
Complete the first line
Complete the red line