As a dedicated Call of Duty player, I was thrilled when the second set of Weekly Challenges for Season 3 dropped in Modern Warfare 3 in 2026. The prize? The very first Aftermarket Part for a Modern Warfare 2 weapon: the JAK Jawbreaker Kit, a conversion kit that could transform the KV Broadside shotgun into a full-auto battle rifle. The challenge was clear: complete any five of this week's tasks across Multiplayer, MWZ (Zombies), and Warzone. It sounded daunting, but the promise of that unique weapon mod was too tempting to ignore. I geared up, ready to tackle shotgun kills, Mimic eliminations, and squad assemblies.
🔥 The Coveted Reward: JAK Jawbreaker Kit
After finally completing my fifth challenge, the unlock notification flashed on my screen. The JAK Jawbreaker Kit for the KV Broadside was mine. This wasn't just any attachment; it was a piece of history, the first conversion kit for a legacy MW2 weapon. I had to make sure I unlocked the KV Broadside itself first—a quick reminder for anyone who missed MW2 last year. The kit fundamentally changes the weapon. It morphs the shotgun into a battle rifle that operates almost identically to the Sidewinder, with a deliberate fire rate of 433 RPM. The power is real; in core Multiplayer, a single headshot can lead to a devastating two-hit kill. However, this power comes with significant trade-offs. The JAK Jawbreaker has, without a doubt, the worst firing aim stability in the entire 2026 MW3 arsenal, even worse than the ported MW2 guns. To make it usable beyond 20 meters, I had to dedicate almost every attachment slot to improving firing stability. The visual recoil is also intense, a chaotic screen shake that demands recoil-control attachments. It's a high-skill, high-reward tool that forces you to master its quirks.
🎮 Conquering the Multiplayer Battlefield
The Multiplayer challenges were a mix of precision and aggression. Here’s how I tackled them:
| Challenge | My Strategy & Tips |
|---|---|
| 30 Operator Quickscope Kills | Used recommended battle rifles (marked by a flaming icon) on smaller maps. Patience was key—waiting for the perfect lane. |
| 20 Clean Kills with Shotguns | "Clean" means no damage taken before the kill. I played defensively, holding corners in objective modes. |
| 20 Kills with a Scoped & Suppressed Shotgun | Slapped a scope and suppressor on a recommended shotgun and played a stealthy, mid-range support role. |
| 15 Double Kills | This was about positioning. I found choke points in Hardpoint or Domination and unleashed with high-capacity weapons. |
| 10 Longshot Kills with KV Broadside | The trick? 12.5 meters is the magic distance. I used slugs and aimed down long corridors. It was tough but doable. |
| 15 Quickscope Kills After Sprinting | This required a hyper-aggressive, run-and-gun style with shotguns. No camping allowed! |
| 5 Kingslayer Kills (10 times) | The most satisfying challenge. I focused on identifying and hunting the top player on the enemy team. It felt like being a bounty hunter. |
For efficiency, I combined tasks. I used a recommended shotgun with a scope and suppressor to work towards three challenges at once: the scoped/suppressed kills, clean kills, and double kills.
🧟 Surviving the Zombie Horde in MWZ
The Zombies challenges were a different beast entirely, requiring loadout preparation and map knowledge. My game plan centered around one weapon: a Pack-A-Punched Haymaker with Napalm Burst ammo. This setup was a powerhouse for multiple challenges.
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Start Strong: I loaded in with the Napalm Burst Haymaker and activated Speed Cola for faster reloads. I then focused on getting 200 kills with the Napalm Burst shotgun and 500 kills with a recommended battle rifle while Speed Cola was active. Grinding these out in the lower-threat zones built my resources.
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Gear Up & Move In: After packing my weapon and upgrading its rarity to Epic (purple) or higher, I went for the 250 kills with a recommended pistol. A Pack-A-Punched pistol with a large magazine made this surprisingly fun.
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High Threat Zone Assault: This was the most intense part. With my powerful Haymaker, I ventured into the red High Threat Zone. My goals here were:
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Get 150 kills with a recommended weapon in this dangerous area.
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Get 200 hipfire kills with a recommended shotgun. The Haymaker was perfect for this—I just pointed and shot into hordes.
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Get 10 kills without taking damage, 30 times. This required careful positioning and using decoys to control zombie flow.
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Mimic Hunt: The final challenge was to kill 5 Mimics with a recommended shotgun. These shape-shifting enemies are commonly found in buildings within the High Threat Zone. The surefire way? Pick up High Value Target (HVT) Contracts that specifically list a Mimic as the target. My Haymaker made quick work of them.
By following this route, I managed to complete five Zombies challenges in just one or two dedicated matches. Efficiency is survival!
🌍 Mastering Warzone's Rebirth Island
The Warzone challenges took me back to the frantic, resurgence-style action of Rebirth Island. The tasks were less about gunplay and more about strategy and exploration.
The very first challenge was the simplest but required coordination: Perform a squad assemble 7 times. This just meant making sure my entire team landed close together at the start of a match. We made it a habit, and it was done in a few games.
The bulk of the work involved a grand tour of Rebirth Island, opening a total of 120 loot caches across all its major regions:
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Northwest (Dock, Control Center): 30 caches
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Southeast (Stronghold, Living Quarters): 30 caches
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Northeast (Bioweapons, Harbor, Chemical Eng.): 30 caches
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Center (Prison HQ, Factory): 30 caches
My squad and I would drop into a region, avoid early fights, and sprint from building to building, looting every crate and cupboard we could find. We combined this with the 20 Contracts challenge, grabbing easy Recon or Supply Run contracts as we moved. This kept us funded and moving. The final challenge, place in the top ten 7 times, happened naturally through this cautious, loot-focused playstyle. By avoiding the initial chaos and gearing up thoroughly, we consistently found ourselves in the later circles.
💎 Final Thoughts on Season 3, Week 2
Completing these challenges was a journey through every facet of Modern Warfare 3 in 2026. From the precise aim duels in Multiplayer, to the resource management and horde control in MWZ, to the tactical looting and positioning in Warzone, it tested all my skills. The JAK Jawbreaker Kit was a worthy prize—a janky, powerful, and unique weapon that feels like a secret only dedicated players unlock. It’s not a meta choice, but it’s a blast to use and a true badge of honor for completing a diverse and engaging set of weekly challenges. The key was finding the synergies, like using the Haymaker in Zombies for multiple objectives, and staying focused on the goal. Now, if you'll excuse me, I have a very unstable battle rifle to go practice with!