Walkthrough for Curious Tales From Blackwater of Red Dead Redemption: Undead Nightmare.
1. Go to U mark in the Map.
2. After meeting Harold MacDougal run to the next U mark in the Map.
Tip: Your ammo is limited so it's better to not waste it on unnecessary zombies.
4. A woman will give you a Torch that you can use to fight and burn zombies with.
5. To to Graveyard marked with a Skull in the Map.
6. Burn the Coffin behind the church.
7. Few dead will rise from graves, burn them and then burn rest of the Coffins marked with Yellow Dot.
8. If there is any zombies alive in the graveyard, you need to kill all of them first.
9. Once you are done with rising dead, a Bruiser zombie called Mordecai will rise. Other than his charge, he's no different than other zombies.
10. Get back to Blackwater marked with U in the Map and help survivals.
11. A bar appears in top of the screen and it gets filled a little bit every time you kill a zombie.
12. Go to the U mark to meet survivors.
13. Search for one more group survivors in the green area of the map.