Solve all case files in Co-op.
Use every type of melee weapon on a zombie.
Kill 72,000 zombies.
Kill 53,596 zombies.
Use every type of novelty weapon on a zombie.
Play and win in all 9 TIR events.
Collect all combo cards.
Collect all survivor combo cards.
Save 50 survivors.
Use every type of explosive on a zombie.
Change into all the clothes in the game.
Fill all entries in the notebook.
Kill 1,000 "special" zombies.
Create all combo weapons.
Kill 5,000 zombies.
Use every type of firearm on a zombie.
Give Katey every possible gift.
Use every type of ranged weapon on a zombie.
Kill 1,000 zombies while riding a motorcycle.
Spraypaint all Zombrex posters.
Reach level 50.
Continue playing to unlock this secret achievement.
Give your bike a custom paint job.
Finish in first place in a TIR episode.
Come in first place in a single TIR event.
Give Katey a gift.
Enter all the stores in the game.
Kill 1,000 zombies barehanded.
Smash 100 zombies using the Smash skill move.
Spend $6,000,000 in Fortune City.
Eat all types of food in the game.
Stick it to a zombie by covering him in weapons and objects!
Have 10 zombies with masks on at once.
Create and consume all mixed drinks in the game.
Collect all combo cards hidden in Fortune City.
Escort 8 survivors at once.
Tame Snowflake.
Complete Overtime Mode.
Complete The Facts.
Collect 25 combo cards.
Collect all combo cards from psychopaths.
Reach level 25.
Defeat 10 psychopaths.
Mix a drink.
Defeat 5 psychopaths.
Change into 10 different pieces of clothing.
Save 10 survivors.
Kill 500 zombies.
Create a combo weapon.
Revive another player in Co-op.
