How to Activate the Zombie Mode in Red Dead Redemption 2

Escalera in Red Dead Redemption 1.

Had mask moved from Catacombs.

John Marston returned the mask to stop Zombies.

Green Mask with teeth is not that mask.

Another mask on the shelf is a zombie mask.

If that mask is not returned, the zombies exist.

Mask is currently in Saint Denis fence.

You will need to check shallow holes for zombies.

After midnight with high honor.

No zombie mode (not even white hair).

Go there and mark a spot near Sisika Prison.

After that, you have to get on a boat (or steal one).

Then row to marker.

And go onto the shore.

You are now at Sisika Penitentiary.

You will need to prepare to attack.

And clear the nearby guards.

Options->setting->Triangle.

After that, turn on Infinite Ammunition.

Activate the Decrease Wanted level.

And then activate set health, stamina and dead eye bars to full.

Repeat and lower wanted level multiple times so guards don't respawn.

Then you have to activate wagon.

Repeat until you get the wagon that you want.

This is the type of wagon you want.

Now you will need to ride and back up the wagon to the ramp.

Climb the wagon and run to the sloped roof.

Place Dynamite R2 on roof middle.

Ignite (triangle) and run to bricks.

You should pop inside the Sisika Prison.

Go to the center spire.

Hit down direction to see the honor stat.

After that, go down to the basement level.

Zombie door locked.

Half zombie mode (white hair).

Now let's get the lowest honor and come back to this prison.

After that, make your way down to the basement again.

Locked (need undead nightmare DLC?).

Arthur in full undead zombie mode!