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