Zed's Dead, Baby

 is an achievement/trophy in the Red Dead Redemption Undead Nightmare DLC pack.

Description
"Attain 100% Game Completion statistic in Undead Nightmare."

After obtaining 100% completion, unlimited item and ammo creation becomes available, making the ammo problems of the game almost virtually gone. This is only appliable for build the build ammunitions, not all types of ammunition.

Undead Nightmare is significantly easier to get 100% completion than Red Dead Redemption, and can easily be done in less than 9 hours total gameplay.

Acquisition
This achievement requires players to completely finish every aspect of the game, as such the player must:

Survivor missions

 * &quot;Love in the Time of Plague&quot;
 * &quot;Curious Tales from Blackwater, USA&quot;
 * &quot;Get Back in that Hole, Partner&quot;
 * &quot;A Cure for Most of What Ails You&quot;
 * &quot;American Imperialism&quot;
 * &quot;Mother Superior Blues&quot;
 * &quot;A Civilized Man&quot;
 * &quot;On a Pale Horse&quot;

Side-missions

 * &quot;Birth of the Conservation Movement&quot;
 * &quot;Paternal Pride&quot;
 * &quot;Dinner for Two&quot;
 * &quot;Missing Souls&quot;
 * &quot;Filth and Other Entertainment&quot;
 * &quot;Biographies and Lies&quot;

Have all the regions saved at least once:
West Elizabeth
 * Blackwater
 * Manzanita Post
 * Cochinay
 * Pacific Union R.R. Camp

New Austin
 * Thieves Landing
 * MacFarlane's Ranch
 * Armadillo
 * Twin Rocks
 * Fort Mercer
 * Plainview
 * Ridgewood Farm
 * Rathskeller Fork
 * Gaptooth Breach

Nuevo Paraiso
 * Nosalida
 * Escalera
 * Tesoro Azul
 * Chuparosa
 * Las Hermanas
 * Agave Viejo
 * Casa Madrugada
 * El Presidio
 * El Matadero
 * Torquemada

Cleanse All the Graveyards:

 * 1) Blackwater Graveyard
 * 2) Coot's Chapel
 * 3) Odd Fellow's Rest
 * 4) Tumbleweed Graveyard
 * 5) Sepulcro

Save all Missing Persons
1% each for a total of 16%
 * 10 Missing Persons in Fort Mercer
 * 6 Missing Persons in El Presidio

Break the Unicorn

 * To locate the Unicorn, The Chupacabra must first be killed. It will then be found in the same area the Hungarian Half-Bred was located.

Complete all the Challenges:

 * Four Horses of the Apocalypse
 * Undead Hunter Challenges
 * Undead Treasure Hunter
 * Undead Sharpshooter

Get all The Outfits

 * Legend of the Apocalypse/Undead
 * Undead Hunter/Army of the Undead
 * Undead Cowboy Outfit

Trivia

 * The title of this achievement/trophy is a partial quote from Butch Coolidge, a character played by Bruce Willis in the film Pulp Fiction.
 * Upon reception of this trophy, builds no longer require items.
 * The name of the achievement is also trivial to the Borderlands trophy, 'Ned's dead baby, Ned's dead'