A Player's Guide to Modern Warfare 3's Final Week 8 Challenges and Rewards

Hey everyone! As we wrap up the first season of Call of Duty: Modern Warfare 3 in 2026, the eighth and final set of weekly challenges has arrived. I've been grinding through them, and let me tell you, this week is a real test of dedication. Completing five of these tasks will net you the exclusive Urgent Business weapon blueprint for the MTZ-762 battle rifle. It's a sleek setup featuring the Caucasus Reflex Sight, Bruen Heavy Support Grip, and a 30 Round Mag, usable across Multiplayer, Zombies, and Warzone. If, like me, you've managed to complete all eight weeks of seasonal challenges, you'll also unlock the Coherence weapon camo—a solid, non-animated camo for all your MW2 and MW3 weapons. This final week heavily emphasizes using Aftermarket Parts, so get ready to dive back into those conversion kits from earlier in the season. Some of these challenges are quite the time sink, so settle in!

Multiplayer Mayhem: Precision and Kits Required

Jumping into Multiplayer this week feels like a specialized marksmanship exam. The challenges are all about specific conditions and attachments. Here’s the full list I’ve been working through:

Challenge	XP Reward	My Quick Tip
Get 20 point-blank kills with a recommended weapon.	2,500 XP	Use SMGs on small maps like Shipment! 🏃‍♂️💨
Get 5 longshot kills with the JAK Beholder Rifle Kit on the Tyr.	5,000 XP	Head to Ground War for those long sightlines.
Get 20 clean kills with the JAK Signal Burst on the Holger 556.	5,000 XP	This one's tricky—every bullet in the 4-round burst must hit!
Get 20 ADS kills with the JAK Headhunter Carbine Kit on the Rival-9.	5,000 XP	Play more defensively and hold angles.
Get 15 headshot kills with the JAK Bullseye on a recommended weapon.	7,500 XP	Slow down your shots for accuracy.
Get 15 headshot kills with the ADK 4.0x RQ-9 Recon on a recommended weapon.	7,500 XP	Unlike last week, the listed optic is correct! Use it.
Get 3 kills without dying 5 times with the JAK Ettin Double Barrel Kit on the AMR9.	10,000 XP	Play cautiously in objective modes for those streaks.

A couple of personal notes: For the longshot challenge with the Tyr, I found playing the Mosh Pit or Ground War playlists made it much easier to find those distant engagements. And for the JAK Signal Burst challenge, patience is key—wait for the perfect shot to ensure all four rounds connect for that "clean kill" count.

Zombies Onslaught: Pack-a-Punch and Perks

Over in MWZ (Modern Warfare Zombies), the challenges mix horde clearing with specific gear and elite hunting. It's a fun change of pace! Here's what you need to tackle:

• Get 500 critical kills with a recommended weapon. (2,500 XP) – Aim for the head! This one adds up fast in a good train.

• Get 300 kills with the JAK Thunder LMG Kit on the Sidewinder while Juggernog is active. (5,000 XP) – The Sidewinder with this kit is a beast for this. Just keep that Jugg juice flowing!

• Get 200 kills with the JAK Signal Burst on a Pack-A-Punched Holger 556. (5,000 XP) – Pack-a-Punch that Holger to make short work of zombies.

• Get 200 kills with the MCW 6.8 while Stamin-Up is active. (5,000 XP) – Stamin-Up lets you kite zombies easily while you gun them down.

• Kill 5 special zombies with shotguns. (7,500 XP) – My go-to here is the Lockwood 680 with the Defender Heavy Barrel and Slug Shells. It shreds Mimics and Disciples.

• Get 50 mercenary kills with the JAK Headhunter Carbine Conversion on the Rival-9. (7,500 XP) – Infested Strongholds are your best friend for finding mercenaries.

• Kill two Warlords with a recommended weapon. (10,000 XP) – This is the big one. Warlords like Dokkaebi and Legacy spawn randomly each game, so you might need a few matches. Go in prepared with a squad and plenty of self-revives!

For the Aftermarket Part challenges, I highly recommend focusing on the Sidewinder and Rival-9 loadouts. They handle the zombie hordes really well with these specific kits attached.

Warzone Warfare: Looting and Surviving in Urzikstan

The Warzone challenges have me crisscrossing the map of Urzikstan, focusing heavily on looting and survival. It's a great way to explore every corner of the map under pressure.

Here’s the Battle Royale checklist:

1. Get 40 kills or assists with recommended weapons. (2,500 XP) – Plunder mode is perfect for farming this quickly.

2. In Urzikstan, open 20 chests in the northwest (Resort, Power, Seaport, Cargo). (5,000 XP)

3. In Urzikstan, open 20 chests in the south (City, Suburbs, Manor). (5,000 XP)

4. Complete 15 contracts in Warzone. (5,000 XP) – Intel, Bounty, and Safe Crackers are your fastest options.

5. In Urzikstan, open 20 chests in the east (Military Base or Farms). (7,500 XP)

6. In Urzikstan, open 20 chests in the central area (Old Town, Low Town). (7,500 XP)

7. In Warzone, place in the top ten 5 times or complete a Covert Exfil. (10,000 XP) – ⚠️ Important Update for 2026: Covert Exfils are still not a feature in Warzone. You must place in the top ten five times to complete this final challenge. Play for placement—sometimes hiding is a valid strategy!

For all those chest-opening challenges, I found dropping into less popular areas within the specified regions helped me avoid early fights and loot in peace. Again, Plunder is a fantastic mode for focusing purely on opening chests without the constant fear of final circle collapse.

Final Thoughts and the Grind

Phew! This final week is a marathon, not a sprint. The emphasis on very specific Aftermarket Parts means your loadouts aren't always going to be meta, but that's part of the fun and challenge. My personal grind strategy was to focus on one mode at a time. I started with Zombies to get the more straightforward horde kills out of the way, then moved to Multiplayer for the precision-based tasks, and finally tackled the Warzone challenges which require a bit more time per match.

Remember, you only need to complete five of the challenges across all modes to earn that Urgent Business blueprint for the MTZ-762. So, prioritize the ones that suit your playstyle! For me, the Zombies special zombie kills and the Warzone top-ten placements were the key. Earning the Coherence camo on top of it all is a fantastic badge of honor for seeing the entire season through. Good luck out there, operators—see you in the fight for those final seasonal rewards! 🎮⚔️