Full list of all 12 Dead Rising 2: Case Zero achievements worth 200 gamerscore. It takes around 4-5 hours to unlock all of the achievements on Xbox 360.
Save all the survivors in Still Creek.
Escape Still Creek with Katey.
Defeat Jed the Mechanic.
Kill 100 zombies.
Kill 1,000 zombies.
Spend $100,000 in the pawnshop.
Find and return a bike part.
Rebuild the bike.
Build a combo weapon.
Build all available combo weapons.
Unlock all the doors in Still Creek.
Purchase a clue from Dick, the pawnshop owner.