Now Willard Wyler has dropped us into a 1950s radioactive-monster movie.

And somebody at Infinity Ward apparently asked:

“What if the Easter Egg had homework?”

Because this map contains one of the most infamous Zombies puzzles ever created:

🧪 CHEMISTRY.

And remember our rule:

❌ WE ARE NOT SAYING “USE A CHEMISTRY SOLVER.”

✅ WE ARE LEARNING HOW THE ACTUAL PUZZLE WORKS.

The numbers are randomized, so I’ll show you how to calculate your game’s answer rather than giving you a fake universal code.

⚡ 1. RESTORE POWER

Your first objective is the power station.

The power handle is found on the beach. Take it to the power box at the Power Station and install it.

⚡ POWER ON.

From here, we want to get Elvira involved and unlock Pack-a-Punch.

And yes:

🎬 ELVIRA IS ACTUALLY HERE.

Infinite Warfare Zombies’ celebrity cameos continue.

📖 2. GET ELVIRA’S SPELL BOOK

Head into the Ice Cream Parlor.

There’s a safe containing:

📕 ELVIRA’S SPELL BOOK.

Take the book to Elvira at the TV Studio.

She’ll give you a green vial and send you on your next objective.

🧪 3. FILL ELVIRA’S VIAL

For this in-game quest step, use the map’s Cleaver challenge to fill the green vial.

Once it’s completely filled, return it to:

💋 ELVIRA.

She gets up from her couch.

This is important for two reasons:

1. Elvira can now accompany you.

2. Her mirror becomes accessible behind where she was sitting.

Grab:

🪞 ELVIRA’S MIRROR.

🔧 4. OPEN PACK-A-PUNCH

Once Elvira is following you, escort her to the portal location.

She opens the way into:

🔧 PACK-A-PUNCH.

Unlike our last maps, there’s a nasty little catch:

⚠️ AFTER YOUR FIRST PACK-A-PUNCH VISIT, THE PORTAL MOVES.

Keep that in mind when navigating later.

🧟 5. BUILD FRANKEN-ZOMBIE

Yes.

That’s basically what we’re doing.

We need:

🧟 SIX ZOMBIE BODY PARTS

🪞 THREE MIRRORS.

Some body parts require map-specific traps/interactions, including repairing the Freezer Trap and assembling the Seismic Wave Generator. The quest ultimately has you bring all six parts back to Spawn.

For the mirrors:

🚗 Car Mirror: Knock it loose from the car outside Beachside Market.

🚐 RV Park Mirror: Break the bathroom mirror at the RV campsite and collect the piece.

💋 Elvira’s Mirror: Take it from behind Elvira’s couch after completing her vial objective.

🛏️ 6. SET UP THE EXPERIMENT

Go back to the Spawn/Quarantine area.

Place all six body parts onto the upright examination bed.

Then position the three mirrors around the experiment:

🪞 BROKEN MIRROR

🪞 ELVIRA’S MIRROR

🪞 CAR MIRROR.

We’re constructing an elaborate laser experiment out of zombie pieces and mirrors.

And somehow—

🧪 THIS ISN’T EVEN THE SCIENCE PART YET.

😂

💳 7. GET THE PUNCH CARD

Go to the back room of the:

🍦 ICE CREAM PARLOR.

On the desk is:

💳 A PUNCH CARD.

Grab it and return to Spawn.

Insert it into the machine beside the laser apparatus.

🎞️ 8. DETERMINE THE FIVE-DIGIT LASER CODE

Here’s where things get interesting.

At the TV Station are:

🎞️ FIVE FILM REELS.

Each reel corresponds to one of the digits:

3 — 4 — 5 — 6 — 8.

The order of the film reels tells you the order in which those five digits must be entered.

So your code always contains:

3, 4, 5, 6 and 8 exactly once.

But their order is randomized.

Example only:

If your reels indicate:

6 → 3 → 5 → 4 → 8

then:

🔢 63548

is your forward code.

Write yours down.

⚠️ DO NOT COPY MY EXAMPLE.

Your game’s order may be different.

💻 9. ENTER THE CODE

Back at the machine, you’ll see ten lights corresponding to:

0–9.

A light cycles across them.

Interact when the light reaches the digit you want.

Enter your five digits in the film-reel order.

If you make three incorrect selections, the input attempt stops, but your correctly discovered sequence isn’t completely lost—you can immediately try again.

Once all five are correct:

🟢 GREEN LIGHT.

Now activate the machine.

⚡ 10. FIRE THE LASER

The laser fires.

It reflects:

⚡ → 🪞 → ⚡ → 🪞 → ⚡

through the mirrors and into the body.

And suddenly:

🧟 IT’S ALIVE!

…

Guys.

Maybe Willard isn’t the only problem anymore.

😂

🔢 11. REVERSE THE CODE

Remember your forward code?

Now:

FLIP IT.

Example:

Forward: 63548

becomes:

Reverse: 84536.

Again, those are example numbers only.

Enter your actual code backwards into the machine.

Activate the laser again.

This converts the experiment into:

🔑 THE GARAGE KEY.

Grab it.

🚪 12. OPEN THE GAS-STATION GARAGE

Take the key to the locked garage at the Gas Station.

Open it.

Inside is basically the room that has haunted Zombies players since 2017.

🧪 THE CHEMISTRY LAB.

You also have the framework for the nuclear device we’ll need later.

🧪 13. BUILD THE CHEMISTRY STATION

The chemistry station requires three components located around the map.

They can be found around:

🏖️ Beach/RV path picnic table

🚐 RV Park picnic-table area

🛒 Back room of Beachside Market

Bring all three to the Garage and install them on the chemistry bench.

☢️ 14. BUILD THE NUCLEAR DEVICE

You’ll also need to collect the map’s nuclear-device components and install them on the frame inside the Garage.

Don’t activate anything yet.

We’re nowhere near finished.

Because first we need the code that we’ll eventually use at the very end of the boss fight.

⚠️ THIS CODE IS EXTREMELY IMPORTANT.

🔢 15. GET THE SAFE CODE

Grab the Crowbar and go to the back of:

🛒 BEACHSIDE MARKET.

Under the desk are:

FOUR NUMBERS.

Write all four down.

Example:

2 — 2 — 1 — 7.

That’s only an example; yours is randomized.

Now locate the four pressure gauges around the map.

They’re found around:

⛽ Gas Station

🍔 Snack Shack

⚡ Power Station

🏨 Motel/Crowbar room.

Each gauge cycles through values.

Set the four gauges to the four numbers you found under the desk. The order between gauges isn’t important; collectively, they need to represent your four-number set.

🔐 16. OPEN THE SAFE

Correctly setting the gauges opens the safe in Beachside Market.

Inside is:

☢️ THE NUCLEAR LAUNCH CODE.

🚨 WRITE. THIS. DOWN.

Take a screenshot.

Write it on paper.

Tattoo it onto your—

Actually, don’t do that.

😂

Just write it down.

Because during the final boss sequence:

❌ YOU CANNOT CHECK YOUR INVENTORY FOR IT.

And confusing this with the earlier film-reel code is one of the easiest ways to destroy an otherwise successful run.

I recommend literally labeling your notes:

🎞️ FILM CODE = XXXXX

☢️ FINAL CODE = XXXXX

📻 17. FIND YOUR TARGET CHEMICAL

Now we’re entering:

🧪 THE CHEMISTRY STEP.

And this isn’t one universal recipe.

Your game randomly determines which final compound the nuclear device requires.

A radio eventually tells you the name of the “perfect solution” you need to manufacture.

Write down that compound.

Now we have to determine:

1. YOUR O VALUE

2. YOUR COLOR

3. THE INGREDIENT VALUES

4. THE INTERMEDIATE COMPOUNDS

5. THE FINAL REACTION NUMBER.

Yep.

📚 THIS IS ACTUALLY A ZOMBIES MAP.

🧮 18. FIND YOUR M NUMBER

Go into the:

🏨 MOTEL OFFICE.

On the wall near the window is:

M = [NUMBER].

Write it down.

Example:

M = 6.

Again:

❌ DON’T USE 6 JUST BECAUSE I DID.

Your game randomizes this.

📺 19. READ ELVIRA’S TELEVISION

Go back to the TV Studio.

The television beside Elvira displays numerical ranges associated with:

🔴 RED

🟢 GREEN

🔵 BLUE.

Your M value is used with the TV information to identify the correct multiplier—usually referred to by guides as the O/Φ value—and the corresponding color band.

Conceptually you’re solving:

M × O ≈ TV RANGE.

Possible O values come from a small predefined set such as:

2, 4, 6, 8, 9, 11, 15.

You’re looking for the value that places the product into the appropriate range shown by the television.

Example:

Suppose:

M = 24

and one candidate is:

O = 15.

Then:

24 × 15 = 360.

You compare 360 against the inequalities/ranges displayed on Elvira’s television.

Whichever expression correctly describes your result identifies the:

🎨 COLOR FILTER

you need.

🎨 20. CHANGE THE MAP COLOR

Behind you at the TV Station is the color-control console.

Options include:

NORMAL

🔴 RED

🟢 GREEN

🔵 BLUE.

Switch to the color you just calculated.

⚠️ LEAVE THE CORRECT FILTER ACTIVE.

Why?

Because we’re about to read numbers that change depending on the color filter.

Reading them under the wrong filter gives you the wrong chemistry values.

♦️ 21. READ THE CHEMISTRY DIAMONDS

Around the map are boards displaying chemical ingredients with diamond-shaped number arrangements.

For every ingredient required by your recipe:

READ THE TOP NUMBER

+

READ THE LEFT NUMBER.

Those two numbers are the ingredient’s contribution to the reaction calculation.

Let’s use an example.

Suppose our recipe needs:

Wheel Cleaner: top 4, left 7
Motor Oil: top 2, left 4
Insect Repellent: top 2, left 3

Then:

4 + 7 + 2 + 4 + 2 + 3 = 22.

Now remember our O value?

Suppose:

O = 8.

Calculate:

22 − 8 = 14.

Therefore:

🧪 REACTION NUMBER = 14.

That’s the number you’d enter at the chemistry station for that particular reaction.

🎉 WE DID THE MATH.

No solver.

No “just Google your answer.”

We have officially earned our imaginary chemistry degree.

😂

🧪 22. ACTUALLY MIX A COMPOUND

Bring the ingredients required for your current compound to the Garage.

Place them on the chemistry table.

Calculate:

(TOP + LEFT FOR EVERY INGREDIENT) − O.

Enter that resulting number into the chemistry keypad.

Then activate the reaction.

Correct?

🟢 SUCCESS.

The newly created compound appears.

Wrong ingredients or wrong arithmetic?

❌ REACTION FAILS.

So double-check everything before activating it.

🔁 23. BUILD THE REACTION CHAIN

Your final target chemical may require intermediate compounds.

So instead of:

Ingredient + Ingredient = Final Chemical

you might have something conceptually like:

A + B + C → Compound X

then:

X + D → Compound Y

then:

Y + E → FINAL COMPOUND.

Each stage gets its own reaction-number calculation using:

SUM OF REQUIRED INGREDIENT VALUES − O.

The game’s chemical boards tell you the reaction chain, while your correctly selected color filter reveals the relevant numerical values.

That’s why this puzzle earned its reputation.

It isn’t:

“Find three parts.”

It’s:

“WELCOME TO ORGANIC CHEMISTRY, PLAYER.”

😂

☢️ 24. ADD THE FINAL CHEMICAL

Once you’ve successfully manufactured the exact compound identified by your radio:

Take it to:

☢️ THE NUKE.

Interact with the device.

If the game accepts the chemical:

✅ YOU GOT IT RIGHT.

If you cannot attach it:

❌ YOU MADE THE WRONG FINAL COMPOUND.

Recheck what the radio requested rather than assuming the quest is bugged.

⚠️ 25. POINT OF NO RETURN

🚨 BOSS FIGHT AHEAD.

Before everybody activates the nuclear device:

Finish anything you need.

Get your perks.

Handle Pack-a-Punch.

Stock up.

And most importantly:

☢️ HAVE THE FINAL SAFE CODE WRITTEN DOWN.

Not your film code.

Not your reverse film code.

THE CODE FROM THE SAFE.

Every player will eventually need it.

Once everyone is ready:

Interact with the nuclear device to charge it.

When it’s ready:

☢️ ACTIVATE IT.

🦀☢️ 26. CROG-ZILLA

You’re transported to the beach for the boss fight against:

☢️ THE RADIOACTIVE THING

AKA CROG-ZILLA.

And apparently the plan is to take our freshly assembled nuclear device…

TOWARD THE GIANT RADIOACTIVE MONSTER.

Willard.

Buddy.

We need to discuss your scripts.

😂

☢️ 27. ESCORT THE DEVICE

Push/escort the device down the beach toward the water while dealing with the movie’s enemy waves and Crog-Zilla’s attacks.

Keep advancing until the device reaches its destination near the shoreline.

Now comes the damage mechanic.

⚡ 28. USE THE DEATH RAY

The arena’s Death Ray is used against:

🎯 CROG-ZILLA’S CHEST.

Activate the required ray sequence and concentrate the attack on the glowing chest/core area.

Your goal is to open a hole in its chest.

Once enough damage is dealt:

💥 CHEST BREACHED.

And naturally—

we’re still not finished.

☢️ 29. SURVIVE THE RADIATION PHASE

Retreat toward the far side of the beach/bridge area.

Crog-Zilla begins flooding sections of the arena with radioactive hazards while additional enemies attack.

Stay alive until the next phase triggers.

Eventually the radiation clears.

And then you see—

🔴 LASERS.

A lot of lasers.

🏃 30. THE LASER COURSE

A giant laser obstacle course appears between you and the nuclear device.

And there’s a timer.

You need to navigate through the in-game laser maze toward the device before the countdown expires.

Reach the outline/device.

Hold interact.

The meter fills.

And then—

🌀 TELEPORT.

Where are we going?

Surely somewhere reasonable.

…

🦀 WE’RE GOING INSIDE CROG-ZILLA.

Of course we are.

☢️ 31. FINAL CODE

Remember that nuclear code?

THIS IS WHY I WOULDN’T SHUT UP ABOUT IT.

Inside the monster, find the nuclear-device keypad.

Enter:

☢️ THE CODE FROM THE BEACHSIDE MARKET SAFE.

Every player in co-op needs to successfully enter it. Players have limited failed attempts, so don’t guess.

Correct code?

🟢 ACCEPTED.

Once everybody succeeds—

☢️ DETONATION SEQUENCE ARMED.

💥 32. CROG-ZILLA DEFEATED

The device detonates as the ending sequence plays.

🦀💥 CROG-ZILLA — DOWN.

And after:

Frankenstein experiments

random film-reel codes

mirrors

pressure gauges

inequalities

color filters

multiplication

subtraction

chemical reactions

and a radioactive kaiju

we finally receive:

🔑 SOUL KEY #4.

The Main Quest is complete.