The following are strategies for the Due Diligence achievement. Please feel free to add your own strategies, tips, and Q&A here:

Strategy 1Edit

Recommended genes:

  1. Start Necroa Virus on Casual.
  2. Start in UK.
  3. Evolve Saliva 1 and Segmented Genome in under 60 days.
  4. The PfiGlax pop-up must appear. If not, try again.
  5. Do nothing and save up DNA points. If a symptom mutates, only devolve (Max. 2) if a few countries are infected.
  6. After the symptoms mutate, wait and when the cure is 60% complete, evolve InsomniaFever,PhotophobiaDelirium and Cytopathic Reanimation.
  • DON'T evolve anything, except Zombie abilities if some countries aren't infected or having Z-Com troubles.
  1. Wait until a pop-up appears: "PfiGlax linked to Necroa Virus"
  2. Now remember what you must do. If you fail, restart the game.
  3. Avoid the UK zombie population getting over 4 million. If this happens, use Zombie Horde (you need Horde Pheromones evolved) to move them.
  4. Avoid getting the message "Authorities can't protect from UK"
  5. Have a minimum of 40 DNA saved up for the next steps.
  6. When you get a pop-up, evolve Genetic ReShuffle 1 & 2 to have no relation with AIDS cure.
  7. If a message appears "No PfiGlax link to Necroa Virus," you win the achievement and don't worry if you lose or quit the game.

Strategy 2Edit

Recommended genes:

  1. Start in the UK.
  2. Evolve the Transmissions Segmented Genome and Saliva 1. This must be done within the first 60 days.
  3. Wait for a popup message which reads:
    • PfliGlax announces early success for AIDS cure
  4. Watch for two red News headlines:
    • Blog claims PfiGlax struggling with virus mutation
    • PfiGlax executives in huge share sell off
  5. Evolve the symptoms Insomnia, Fever, Photophobia, Delirium and Cytopathic Reanimation.
  6. Wait for a pop-up message reading:
    • PfiGlax linked to <plague name>
  7. Evolve the abilities Drug Resistance 1, Genetic Hardening and Genetic Reshuffle 1 & 2.
  8. Wait for a popup message reading:
    • No PfiGlax link to <plague name>

The achievement will now have been earned. - GamerSketch (Credits to Mace of Yo It's Spicy)

Strategy guides in Plague Inc. and Plague Inc: Evolved.
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