zetsubou-no-shima BO3

Zetsubou No Shima

Japanese research island · 1945 · Primis

Setup Difficulty
Quest Difficulty
Community Rating
★★★★★ 3.5
Wonder Weapon KT-4 / Masamune
Main Quest The Frozen Dawn
Field Manual — Overview

Intel Brief

A Japanese island overrun with plant-hybrid zombies born from Division 9's biological experiments. Takeo confronts the truth of his past life.

Field Manual — Priority

Setup Guide

Power

  1. Turn on temporary power in both Lab A and Lab B first to unlock bunker progression.
  2. In bunker power room, clear webs on underwater vent, survive lockdown, and claim permanent power activation.
  3. Use bucket water loops (blue/green/purple/rainbow) to support plant growth and quest gating.

Pack-a-Punch Location

Bunker route after power and map-system progression.

Accessing Pack-a-Punch

  1. Collect three underwater/cocoon parts in bunker sections 1, 2, and 3.
  2. Interact with all three white drain points around the PaP pool in bunker center.
  3. Pool drains permanently, gate opens, and Pack-a-Punch remains available for the match.
Field Manual — Equipment

Gas Mask

Essential utility against spore gas and long underwater segments; strongly recommended before late setup and EE cogs.

Lab B area part
Behind Lab B near sewer exit and green water lane (including ICR stairs side).
Plane area part
Around plane/propeller trap zone near box spawn.
Docks part
Under bunker in docks/zipline-challenge statue area.
Field Manual — Equipment

Zombie Shield (and Electrified Shield)

Base shield provides back protection; electrified upgrade is needed for multiple Easter Egg steps and price-zap utility.

Bunker piece
Right section immediately after entering main bunker door (1250 side room).
Lab B exterior piece
Tree/stubble near Lab B staircase from spawn side.
Lab A lower piece
Wall area near Kuda under Lab A lane.
Field Manual — Equipment

KT-4 / Masamune

Map wonder weapon chain and upgrade path. KT-4 is required for web clearing; Masamune is required for full main quest completion.

KT-4 core parts
Spider venom extraction (Lab A cage control).
Glowing zombie drop near green water lane.
Underwater plant pickup near Mule Kick cave route.
Masamune upgrades
Spider boss tooth (from giant spider corpse).
Skeleton vial (Lab B cage lowered with Electrified Shield).
Rainbow-water plant growth part via hidden wall seed cycle.
Field Manual — Main Quest

The Frozen Dawn

PARTIAL SOLO

Zetsubou quest chain combines Skull ritual, KT-4 to Masamune upgrade, cog retrieval, elevator gas section, and final boss sequence.

01
Core setup and poster mesmerize

Activate permanent power, open bunker, build KT-4 and Gas Mask, then mesmerize cocoon-room plans and hidden elevator door.

02
Collect all three elevator cogs

Get zipline cog, Anywhere But Here cog, and plane-shot cog from blue-water fertilized plant shell sequence.

03
Upgrade to Masamune and descend elevator

Complete spider boss and shield-based upgrade tasks, craft Masamune, then ride gas elevator with mask and survive lower challenge room.

04
Boss and final challenge closeout

Finish scripted final interaction chain and complete boss phase to resolve quest ending sequence.

Field Manual — Tactics

Field Strategies

  • KT-4 progression should be an early objective, not a late rescue plan.
  • Use artillery and spider rounds for controlled resource swings.
  • Plant utility can replace raw firepower if managed each round.
Field Manual — Threats

Special Enemies

Spider

Giant arachnid creatures that patrol the map alongside regular zombies. Their acid spit can webbing-trap players in place, and their melee attack applies a poison slow. They are faster than standard zombies.

TIP Prioritise spiders over regular zombies - being webbed in a zombie horde is almost always fatal. High-fire-rate weapons cut through their health quickly.

Zombie Plant (Bomber)

Plant-infused zombies that swell and explode near death, releasing a toxic gas cloud. They glow visibly when close to exploding.

TIP When you see one glowing, back away and finish it from range. The KT-4 acid pool synergises well - apply acid, back off, let it die safely.

Field Manual — Systems

Water and Plant System Anchors

01 Full map reference

Detailed community map showing power, buildables, and bunker sectors.

02 Water types

Blue (Lab A cave), Green (Lab B lower), Purple (bunker lower), Rainbow (sewer passage). Correct water sequencing controls plant outcomes.

03 Electrified Shield utility

Required for multiple EE steps and can discount shocked machines/perks while adding defensive kill value.

Field Manual - Reference

Wiki Intel

01 Source guide

https://www.reddit.com/r/CODZombies/wiki/zetsubou-no-shima/

02 Notable mechanics

Plant growth, KT-4 progression, and utility-lab loops are central mechanics.