Prestige 20 times

Complete the game to 100% (all Platinum medals)

Get all upgrades in all categories

Prestige the Game once

Kill 5 other Zombies by shooting a Taser Zombie

Shoot a Cop Zombie and have their bullet kill five other Zombies

Complete a level by only shooting Barrels

Finish the game getting the best ending

Finish the game with any ending

Get a Platinum medal with a single bullet

Get all Upgrades in a single category

Get a Platinum medal