Complete the main story on Standard mode or higher.

Complete all requests from the Merchant.

Unlock the secret shortcut.

Kill 2 parasites inside a Regenerador with a single bullet.

Get the exclusive upgrade for a weapon.

Make it through both minecart sections in the underground tunnel without taking any damage.

Use a cannon to defeat a zealot.

Destroy a Clockwork Castellan.

Defeat Bitores Méndez.

Change into all costumes available in the mall.

Eat all types of food available in the mall.

Defeat at least 53,594 zombies.

Rescue Ashley as she's being carried away by the enemy.