On Casual, Necroa-Virus (Zombie) Scenario.
Save The Game Before Evolving Anything, I Had About 120 DNA Before I Started.
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Make Sure Most* Of The World Is Infected Then Evolve
Zoonotic Shift
Bat 1
Bat 2
These Will Trigger Cure Research To Start.
When It Hits 90%
- Get Cytopathic Reanimation (Zombie-Making Symptom)
Then Evolve:
Anaerobic Resuscitation
Enhanced Sensory Integration
Temporal Lobe Manipulation
Cathemeral Shift
Vampiric Hunger
- If You Don't Have Enough DNA To Go All The Way Left For Vampiric Hunger; As Countries Fall To The Zombies Your DNA Bank Will Skyrocket.
*Greenland Wasn't Infected, So When The Zombies Started Popping Up, The World Didn't Immediately End Before The Achievement Popped.
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Once You Evolve Those Symptoms It's A Waiting Game. Achievement Will Pop A Few In-Game Months After You Get Them All.
Good Luck!