Build a structure with 3 adjacent blocks

Build a tower with up to 3 blocks

50 blocks destroyed

250 blocks destroyed

50 human infections

250 human infections

Infect 3 players within alloted time

Obtain all power-ups in a single game

Succeed 3 "Close calls" in a single game

Succeed 10 "Close calls" in a single game

Destroy at least 10 structures in a single game

Destroy at least 30 structures in a single game

Destroy at least 50 structures in a single game

Destroy at least 8 structures with explosive rage

Obtain a perfect score in "Rescue" mode (3 points while others have 0)

Obtain a score of 500 points or more in "Outbreak" mode