In the eerie and treacherous world of Zetsubou no Shima, the second Zombies map from the Call of Duty: Black Ops III ‘Eclipse’ DLC, players face relentless enemies, deadly traps, and grotesque mutations. Among the essential tools for survival on this unforgiving island, the Pack-a-Punch machine stands out as a game-changer. Upgrading your weapons through Pack-a-Punch is critical to handling the increasingly powerful zombie hordes. However, accessing it in Zetsubou no Shima is far from straightforward. It involves solving puzzles, powering multiple systems, and navigating a maze-like environment filled with dangers. Understanding how to unlock and use the Pack-a-Punch machine efficiently can make all the difference between success and a swift defeat in this complex map.
Locating the Pack-a-Punch Machine
Where to Begin
The Pack-a-Punch in Zetsubou no Shima is located in the underwater bunker system. To reach it, players must first open up both Lab A and Lab B, restore power, and access the bunker in the center of the map. The process involves multiple steps and requires coordination, especially in co-op matches.
Opening the Bunker
Here’s how to start the journey toward Pack-a-Punch:
- Turn on temporary power at both Lab A and Lab B using buckets filled with irradiated water.
- Once both power sources are active, the main bunker door will unlock.
- Enter the bunker and prepare for the next steps to access the Pack-a-Punch location.
The bunker is heavily guarded by zombies and thrashers, so having decent weapons and perks before entering is recommended.
Steps to Unlock the Pack-a-Punch Room
Step 1: Turn On the Power Permanently
To fully power the map and unlock the Pack-a-Punch area, you must activate the power generator permanently. This requires entering the underwater section beneath the bunker:
- Locate the flooded power room inside the bunker.
- Swim down and clear the web blocking the turbine.
- Turn the wheel to activate the generator, all while monitoring your oxygen levels.
Once this is done, the entire map including Lab systems will have permanent power, making future objectives easier.
Step 2: Clear the Webbing
With the power on, head to the previously sealed door on the right side of the bunker hallway. This door is blocked by large webs. You’ll need to use explosives or melee attacks to destroy the web and gain entry to the Pack-a-Punch chamber.
Step 3: Recover the Missing Machine Parts
The Pack-a-Punch machine is in pieces and requires three parts to be located and inserted before it becomes operational. The parts are:
- Part 1: Dropped from the mini-boss that spawns when entering the Pack-a-Punch room. Defeat it to collect the part.
- Part 2: Found in the sewer exit tube. After using the tube, the part will flash by press the interaction button quickly to grab it.
- Part 3: Located in the underwater passage near the power room. Swim to the far back corner where the broken cage lies to find the part.
Once you collect all three, return to the machine and install the parts to make the Pack-a-Punch operational.
Using the Pack-a-Punch in Zetsubou no Shima
Upgrading Your Weapons
Once operational, the Pack-a-Punch allows you to insert a weapon for 5000 points to upgrade it. This dramatically increases its firepower, magazine size, and adds a special camo. You can further enhance the upgraded weapon with alternate ammo types using the double Pack-a-Punch feature, adding effects like fireworks, turned, dead wire, and blast furnace.
Timing Your Upgrade
Timing is critical when using the Pack-a-Punch in Zetsubou no Shima:
- Wait until you have a weapon with a high base damage and mobility.
- Don’t upgrade too early; save points for perks and opening the map.
- Make sure the area is secure before activating the machine, especially in solo runs.
It’s best to use a crawler or leave one zombie alive before using the Pack-a-Punch to avoid getting cornered.
Strategic Considerations
Weapons Worth Upgrading
Some weapons work particularly well when Pack-a-Punched on this map:
- HVK-30: Reliable with strong output and high ammo capacity.
- MX Garand: With double tap and upgraded, this becomes a headshot machine.
- Wonder Weapon (KT-4): While it can’t be upgraded in the Pack-a-Punch, its enhanced version, the Masamune, is upgraded through side quests.
Focus on weapons that handle well in close quarters and can deal with waves of both zombies and mutated creatures.
Defending the Area
The Pack-a-Punch room isn’t ideal for long fights due to its narrow layout. After using it, leave the area and reposition. If you must stay:
- Use claymores or trip mines at entrances.
- Have a teammate cover each door in co-op mode.
- Activate the machine only when the area is clear.
Efficient use of the Pack-a-Punch means treating it like a pit stop, not a final stand.
Additional Tips and Hidden Secrets
Double Pack-a-Punch Effects
After the initial upgrade, you can spend 2500 points to re-pack the weapon for elemental effects. These effects can:
- Stun or kill groups of zombies
- Turn enemies to fight for you
- Ignite large clusters with chain reactions
These secondary effects are incredibly helpful for crowd control and thinning the horde in higher rounds.
Synergizing With Perks
To make the most out of your upgraded weapon, combine it with perks like:
- Juggernog More health, better survival chances in tight areas
- Speed Cola Faster reloads for big-magazine weapons
- Double Tap 2.0 Boosts fire rate and bullet damage
- Widow’s Wine Adds defensive web grenades on hit
Perk synergy with your Pack-a-Punched weapon will maximize your effectiveness in Zetsubou no Shima’s chaotic late rounds.
The Pack-a-Punch machine in Zetsubou no Shima is one of the most challenging to unlock in the Black Ops III Zombies series, but also one of the most rewarding. Navigating the power systems, finding hidden parts, and assembling the machine requires strategic planning and combat readiness. Yet the payoff is well worth the effort, especially when fighting off stronger zombies, mutated flora, and relentless mini-bosses. Whether you’re trying to survive past round 30 or complete all Easter Eggs, understanding the Pack-a-Punch process gives you the firepower and confidence to face anything the island throws at you. With the right weapons, perks, and awareness, mastering this system will help you dominate Zetsubou no Shima like a true veteran.