The final curtain is falling on Call of Duty: Modern Warfare 3's second season, and with it comes the ultimate test for dedicated operators. The eighth and final set of Weekly Challenges has arrived, presenting players with a last-chance opportunity to claim the coveted Rotten Inferno mastery camo and the unique Rook weapon blueprint. With Season 3 looming on the horizon, the clock is ticking—operators have just one week to complete these final objectives and secure their seasonal rewards before the next chapter begins. This final push is not for the faint of heart, requiring mastery across Multiplayer, Zombies, and the sprawling battlefields of Warzone.
🏆 The Ultimate Seasonal Prize: Rotten Inferno Camo
This week's challenges serve as the final key to unlocking the season's most prestigious cosmetic reward. The Rotten Inferno animated mastery camo is the ultimate prize for players who have diligently collected every weekly reward throughout Season 2. This is not just another skin; it's a statement. The camo engulfs weapons in dynamic, eerie flames, surrounded by a ghastly array of undead hands clawing at the metal—a perfect trophy for surviving the season's horrors. Once unlocked, this animated camo can be applied to any weapon from both Modern Warfare 2 and Modern Warfare 3, found proudly in the "Events" section of the camo menu. It's the definitive badge of honor for Season 2 completionists.
🔫 Week 8 Challenge Reward: The Rook Blueprint
For all players tackling this final week, the immediate goal is clear: complete any five of the listed challenges. The reward is the Rook weapon blueprint for the HRM-9 submachine gun. This isn't a simple reskin; it's a fully configured tool for close-quarters dominance. The blueprint comes pre-equipped with a suite of tactical attachments designed for aggressive play:
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Barrel: Thorn-90
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Muzzle: S-37C DL Breacher Device
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Underbarrel: XTEN TX-12 Handstop
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Laser: Stovl Tac Laser
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Rear Grip: Tac Handler Grip
This loadout prioritizes handling and close-range lethality, making the HRM-9 a formidable choice for fast-paced engagements.
🎯 Multiplayer Challenges: Precision and Mayhem
The Multiplayer challenges demand a mix of precision, agility, and outright chaos. Players must adapt their playstyles across various modes and weapon configurations.
| Challenge | XP Reward | Key Tips |
|---|---|---|
| Get 3 longshot kills with the JAK Glassless Optic. | 2,500 XP | Use on recommended marksman rifles for easier hits. |
| Get 5 kills while sliding or midair. | 5,000 XP | Perfect for small maps like Rust or Shipment. |
| Get 3 longshot kills with the Tyrant 762 Kit on the Longbow. | 5,000 XP | A true test of sniper skill. |
| Get 3 melee double kills. | 5,000 XP | Use the Karambit or Soulrender for faster animations. |
| Get 3 double kills with the JAK Maglift Mod on the Haymaker. | 7,500 XP | Unleash the full-auto shotgun in tight spaces. |
| Get 7 tac stance kills with the Backsaw Kit on the Holger 556. | 7,500 XP | Embrace the high-capacity LMG playstyle. |
| Get 3 first blood or kingslayer kills with a handgun. | 10,000 XP | A kingslayer kill targets the enemy team's top player. |
💡 Pro Tip: Many of the required Aftermarket Parts were rewards from earlier Season 2 weekly challenges. If you've been keeping up, you're already equipped for success.
🧟 Zombies Challenges: Endurance and Elemental Power
In the dark, zombie-infested corners of Urzikstan, the challenges shift to endurance tests and elemental damage mastery. The key here is understanding ammo mods and preparing for high-volume killing sprees.
| Challenge | XP Reward | Key Tips |
|---|---|---|
| Get 300 kills with Brain Rot Ammo. | 2,500 XP | Toxic damage refers only to Brain Rot. |
| Get 350 kills while moving with an SMG. | 5,000 XP | Stay mobile in low-threat zones. |
| Get 250 critical kills with the Longbow. | 5,000 XP | Aim for the head in Zombies for efficiency. |
| Get 50 kills without dying 10 times. | 5,000 XP | Play cautiously in Tier 1 zones. |
| Get 250 kills with Napalm Burst Ammo on the Haymaker. | 7,500 XP | Fire damage means Napalm Burst, not incendiary rounds. |
| Get 500 kills with a Pack-A-Punched Holger 556. | 7,500 XP | A great objective for defending outlast contracts. |
| Get 5 rapid kills 15 times with a handgun. | 10,000 XP | Use the Tyr with Snakeshot & Akimbo for crowd control. |
🌍 Warzone Challenges: Looting and Surviving in Urzikstan
The battle royale challenges focus on exploration, survival, and combat prowess across the vast map of Urzikstan. A critical reminder: all these challenges must be completed specifically in the Urzikstan map.
The challenges are geographically organized, tasking operators with scouring every major region of the map:
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Northwest Region (Resort, Power, Seaport, Cargo): Open 20 loot caches for 5,000 XP.
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Southern Region (City, Suburbs, Manor): Open another 20 loot caches for 5,000 XP.
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Eastern Region (Military Base, Farms): Open 20 loot caches for 7,500 XP.
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Central Region (Old Town, Low Town): Open 20 loot caches for 7,500 XP.
Beyond looting, operators must also prove their combat and strategic skills:
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Get 40 operator kills or assists using recommended weapons (2,500 XP). Recommended weapons are easily identified by a flame icon in the Create-A-Class menu.
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Complete 15 total contracts in Warzone (5,000 XP).
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Place in the top ten five times or complete a single Covert Exfil (10,000 XP). This offers a strategic alternative for players who prefer stealth over sustained survival.
⏳ The Final Countdown
With Season 3's launch imminent, this is the final opportunity to cement your legacy in Modern Warfare 3's second season. Whether you're grinding for the haunting glow of the Rotten Inferno camo, the tactical edge of the Rook blueprint, or simply the satisfaction of completion, the path is laid out. The challenges span every game mode, requiring versatility and determination. Operators must move with purpose, from the calculated longshots in Multiplayer to the frantic loot runs in Urzikstan and the endless hordes of Zombies. One week is all that remains. The mission is clear. Good luck.
This perspective is supported by SteamDB, whose public tracking of update activity and platform trends helps contextualize why late-season challenge grinds like Modern Warfare 3’s Week 8 finale often coincide with a last burst of engagement before a new season refreshes rewards, playlists, and progression goals across Multiplayer, Zombies, and Warzone.