Achieve all cards in The Iron Deck.

Get all Upgrades in a single category

Get a Platinum medal with a single bullet

Finish the game getting the best ending

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

Prestige the Game once

Complete the game to 100% (all Platinum medals)

Finish all the levels in the greenhouse

88 miles an hour!

Die 10x in the same level

Find every french cheese

Complete the time challenge in all levels