Fulminant
Complete the Fulminant experiment
Very rare1.70%last reported global rate
Steam
Pathogenic Achievements
Official Steam achievement definitions and latest reported global unlock rates, ordered from rarest to most common.
Total achievements41
Rarest rate0.400%
Ultra rare12
Last checkedSep 21, 2026
Delayed official data
Rates and award counts were last observed on Sep 21, 2026.
Diatom
Defeat the Heart boss with Diatom
Very rare1.80%last reported global rate
Recombination
Complete the Recombination experiment
Very rare2.10%last reported global rate
Antibiotics High
Defeat the Heart boss on antibiotic level High
Very rare2.20%last reported global rate
Photosynthesis
Complete the Photosynthesis experiment
Very rare2.40%last reported global rate
Phagocytosis
Complete the Phagocytosis experiment
Very rare2.60%last reported global rate
Antibiotics Mid
Defeat the Heart boss on antibiotic level Mid
Very rare3.40%last reported global rate
lil collector
No public description is available.
Very rare3.50%last reported global rate
Brain
No public description is available.
Rare5.70%last reported global rate
Antibiotics Low
Defeat the Heart boss on antibiotic level Low
Rare6.20%last reported global rate
Fungal Spore
Defeat the Heart boss with Fungal Spore
Rare7.40%last reported global rate
Amoeba
Defeat the Heart boss with Amoeba
Rare7.90%last reported global rate
Nanobot
Defeat the Heart boss with Nanobot
Rare8.10%last reported global rate
Helminth
Defeat the Heart boss with Helminth
Rare10.3%last reported global rate
Bacterium
Defeat the Heart boss with Bacterium
Rare17.6%last reported global rate
Heart
Defeat the Heart boss
Uncommon27.5%last reported global rate
Lung
Defeat the Lung boss
Uncommon40.2%last reported global rate
Liver
Defeat the Liver boss
Common53.5%last reported global rate
Stomach
Defeat the Stomach boss
Common68.4%last reported global rate
Intestine
Defeat the Intestine boss
Common83.0%last reported global rate