Kill 1,000 zombies.
Spend $100,000 in the pawnshop.
Build all available combo weapons.
Save all the survivors in Still Creek.
Escape Still Creek with Katey.
Unlock all the doors in Still Creek.
Rebuild the bike.
Purchase a clue from Dick, the pawnshop owner.
Defeat Jed the Mechanic.
Find and return a bike part.
Kill 100 zombies.
Build a combo weapon.