Complete 'Showdown'.

Complete 'Zero Bark Thirty'.

Enter the Zombie Stats room as a Plant.

In solo ops, swap to another character.

As Kernel Corn, vanquish 25 Zombies with the Shuck Shot.

Enter Infinity as a Plant.

As the Chomper, swallow a Goat.

Train with the Mysterious Fish.

Complete an Ops game on CRRRRRAAAZY Difficulty.

Visit a friend's Backyard Battleground, or have a friend visit your Backyard Battleground.

Shoot down 1,000 crows

Craft a stone tool

Perform an en passant capture