Zombie

Making a zombie is unlocked relatively early in the game by completing a series of short missions and unlocking the right technologies. You first have to meet Gunter and do his bidding.(the dlc is unlocked after 21 days in the game)

Zombie Workstations

Most of the stations need to be unlocked by technology. Stations with an asterisk * can be operated by both a zombie or the graveyard keeper (you). There is also one quest where you need to install a zombie as a greeter for the Talking Skull tavern (Stranger sins DLC).

Wood	Ore	Stone / Marble	Crops	Alchemy	Other
Sawhorse*	Zombie ore mine	Zombie stone quarry	Zombie farm	Random text generator	Porter station
Circular saw*	Wooden anvil*	Zombie stone quarry	Zombie vineyard	Zombie alchemy decomposer	Crate factory*
Carpenters workbench I*	Anvil*	Stone cutter*	Zombie-brewery	Zombie alchemy workbench	Paper press*
Carpenters workbench II*	Anvil II*	Stone cutter II*	Zombie-winery		Jewelry table*
Chopping spot*					Potter's wheel*

The downsides are that you will not get any Technology points from the working zombies. To counter that you can:

• Let zombies write point books at the Random text generator
• Buy books from the Astrologer
• Research graveyard items or advanced tools
• Use Circumspect to increase points for research

Creating a zombie

You may salvage one zombie at the beginning of the Stranger Sins quest line, but you can also make your own on a resurrection table by using 1×
zombie juice on a corpse and 10×
Faith. To put a zombie to work, simply carry it to the station where you want it to work and place it down when prompted. It's important to note that you cannot create zombie juice (and therefore a zombie) without an Alchemy workbench (tier I), which is impossible to get in the early game. However, you will gain access to 3 zombie juice's that are provided shortly after talking to Gunter.

Dispose a zombie

It is possible to throw zombies into the river or bury them in the graveyard to dispose of subpar or not needed zombies. It is advisable to remove all before doing so. Zombies get no penalty from but a grave does.

Improving a zombie

Zombies have a stat called "Work Efficiency" that represents how effective their work generally is. This stat directly relates to the number of skulls, while skulls will have no effect. A zombie can be modified, much like a regular corpse, as many times as is necessary either by autopsy at the preparation place or injections at the embalming table.

Efficiency is compared to the players crafting speed. For example a task that take 2s if done by the player will take 20s for a 10% efficiency zombie.

Efficiency doesn't have any impact on transport speed. Thus, it is a good idea not to waste injections or energy on preparing zombies that are going to be used in a Porter station.

Skulls	Efficiency	Skulls	Efficiency	Skulls	Efficiency	Skulls	Efficiency
0/1	2%	8	20%	15	38%	23	55%
2	5%	9	22%	16	40%	24	58%
3	8%	10	25%	17	42%	25	60%
4	10%	11	28%	18	45%	26	65%
5	12%	12	30%	19	48%
6	15%	13	32%	21	50%
7	18%	14	35%	22	52%

Maximum efficiency can be achieved by the following steps:

• Applying
  lye injection (++),
  glue injection (+),
  silver injection (-+), &
  gold injection (-+).
• Removing
  blood (-+) &
  fat (-+).
• while keeping
  flesh (-) &
  skin (+-).
• Removing
  skull (+) &
  bone will not change the zombie quality.
• Replacing
  brain,
  heart , &
  intestine with more variants.

There is also a guide to preparing 12 skull corpses.

The order in which these steps are applied does not matter, although you will not be able to apply
silver injection and
gold injection, if the corpse does not have at least 1 and 2 respectively at the time. You can work around this by either temporarily replacing other organs or applying
dark injection.

Preparing a 16 Skull Corpse (by u/Gunnar_Dog Dec 11, 2019)

"Disclaimer: There may be other ways but this is how I get it. I know Dark Injection can help add red skulls if you need it to START.

• Steps 1 through 3 are specific Brain/Intestine/Heart to get a corpse with 4 red skull and 9 white skull to START. (Brain -2/3; Intestine 3/3; Heart 3/3)
• Step 4: Lye Injection to get 5 red skulls and 10 white skulls.
• Step 5: Glue Injection to get 5 red skulls and 11 white skulls.
• Step 6: Silver Injection to get 4 red skulls and 12 white skulls.
• Step 7: Gold Injection to get 2 red skulls and 14 white skulls.
• Step 8: Remove Blood to get 1 red skulls and 15 white skulls.
• Step 9: Remove Fat to get 0 red skulls and 16 white skulls."

Maximum efficiency (Better save soul required)