Sample 21 completed without colliding with a single flagellate pathogen
Chapter 5 completed
Game completed with no life upgrade
Sample 17 completed without being poisoned once by toxins
Sample 14 completed without slowing the chain
Sample 12 completed without touching a single sticky web
Sample 8 completed without destroying a single bloated cell
Game completed with both difficulties set to hard
All gold medals in story mode earned
All diamond medals in story mode earned
Awarded with an extra chain reaction in chapter 4 or 5
Last wave difficulty reached in all challenges
