Here is the full list of all 17 Heal Them All achievements.
Click on microbes 1000 times.
Complete any campaign with max Star Rating.
Sell 10 Med Towers.
Use the Rush Button 100 times.
Use every Special Power at least 3 times.
Play the game for 3 hours.
Kill at least 5 microbes with 1 shot of Laser.
Use Laser Beam to destroy a Nodule.
Defeat lieutenant Sicko.
Put an end to general LaPlague supremacy.
Eliminate 1000 microbes.
Get rid of admiral DeFlu.
Accumulate 200 Energy units.
Destroy 100 Nodules.
Collect 100 000 Proteins.
Build 100 Med Towers.
Defeat a boss microbe using Med Mines only.