Rex Infernus is the final round-based Zombies map in Black Ops 7, released on August 20, 2026 with the Season 5 Reloaded update — and it closes out the entire Warden storyline. Set in a shattered recreation of Dr. Monty’s estate, the Rex Infernus Easter Egg tasks your crew with cleansing the four Shadowsmith places of power, building the new Warden’s Blight Wonder Weapon, and defeating the Warden himself. This full walkthrough breaks down every main quest step in order — Pack-a-Punch, the puzzles, temple cleanses, the boss fight, and all the completion rewards — so you can finish the finale without getting lost.
Quick overview: To complete the Rex Infernus main quest you’ll activate Pack-a-Punch (and grab the Void Claw), build the Warden’s Blight Wonder Weapon, repair the Nexus Forge, cleanse all four Shadowsmith temples, and defeat the Warden (Jack McGregor). Completion rewards the Bloodthorn Wonder Weapon Skin, a Calling Card, and 10,000 XP — plus a bonus Calling Card variant if you finish before Directed Mode releases.
Stuck on the finale or short on time? Black Ops 7 Boosting can complete the Rex Infernus Easter Egg for you — unlock the Bloodthorn skin, the Calling Card, and every reward without the grind, so you can enjoy the story’s conclusion hassle-free.
Related Guides:
- MW4 Beta Best Guns and Loadouts.
- MW4 Beta Player Count Drops 65%
MW4 Open Beta Weekend 2 Changes - Modern Warfare 4 Beta: Best Guns & Loadouts
Rex Infernus Main Quest Steps (In Order)
The quest is long and round-gated, so the order you do things in matters more than raw firepower. Here’s the full sequence from spawn to the final boss.
Step 1: Escape Her House & Reach the Nexus Forge
You spawn inside Her House and must survive a few rounds while zombies pour in. Grab the GobbleGum machine and a Quick Revive upgrade early. After a few rounds, a phone starts ringing on the lower floor — answer it to hear the Twins from Paradox Junction. When the call ends, the front door opens. Note the interactable piano inside (it matters later), then head out to the portal on the cliff edge and step through to reach the Nexus Forge, the map’s central hub.
Step 2: Activate Pack-a-Punch & Get the Void Claw
From the spawn house basement, answer the ringing phone to unlock the door into the main map, then take the teleporter down to the Nexus Forge. Activating Pack-a-Punch here also grants you the Void Claw, the map’s special melee/utility weapon you’ll upgrade later.
Step 3: Place the World Seed & Free the Usurped Flames
Place the World Seed (carried over from Kowakujo) on the pedestal at the center of the Nexus Forge. This summons the Twins — a pair of skulls you take down one at a time. Damaging each skull sends it fleeing behind a nearby locked door; break in, finish it off, and it drops an Usurped Flame. Carry each flame back to the Forge and hurl it into the matching brazier.
Step 4: Build the Warden’s Blight Wonder Weapon
With the Forge active, complete the Warden’s Blight Wonder Weapon quest. This involves solving the Dravakar pillar riddle to open a secret room and gathering the required components around the map. The Warden’s Blight is your primary tool for the temple cleanses and the boss, so build it before pushing further — just note it burns through ammo fast, so keep Max Ammo sources in mind.
Step 5: Upgrade the Void Claw & Repair the Nexus Forge
Return to Her House to upgrade the Void Claw, then complete the steps to fully repair the Nexus Forge. This unlocks access to the four Shadowsmith temples.
Step 6: Cleanse the Four Shadowsmith Temples
This is the heart of the quest. Each of the four Shadowsmith temples (including Veytharion) has its own puzzle to cleanse its place of power. Across the temples you’ll encounter mechanics like:
- Elemental block puzzle — stack the Earth, Air, and Fire blocks in the correct column to open a secret wall and reveal a portal.
- Pressure-plate reflectors — jump on a tile 30 times in a row without stopping to reveal a reflector (Decoys, Aether Shroud, or a teammate holding aggro make this far easier), then lift it with a charged shot and angle the beam into the target.
- Soul-charging — kill zombies under a charged beam or orb, then shoot the resulting head and clear the ghosts.
- Grapple orbs — grapple an orb beneath a statue (e.g. Veytharion) and launch it with a charged shot.
- Rain/pool cleanse — interact with a temple’s pool to trigger rain, then throw a colored orb at the matching light above the statue’s head.
- Woven Sash & braziers — retrieve the Woven Sash during a rain round and place it in the brazier to continue.
- Titan Traps — lead a zombie to a lit fire pit so it absorbs a symbol, read the smoke color to identify the matching Titan trap, then guide the zombie to that Titan to be crushed, freeing a shackle.
Note on randomization: Several temple steps (symbol sequences, smoke colors, block orders) are randomized per match, so there’s no single fixed code — follow the in-game clues (smoke color, symbol shapes) rather than memorizing a set answer. Do the temples methodically; rushing causes most wipes.
Rex Infernus Final Boss: The Warden
Once all four temples are cleansed, place the World Seed, light the braziers with Usurped Flames, and rotate the wheel levers to open the path to the finale. The final boss is the Warden — real name Jack McGregor — the overarching antagonist of Black Ops 7’s Zombies story.
The fight is a repeating damage cycle:
- Clear Warden Stingers and dangerous special zombies as they spawn.
- Destroy the Shadow Souls protecting the Warden.
- Shoot all the orbiting skulls circling him.
- Use a Kazimir or a defensive Field Upgrade to create space when overwhelmed.
- Focus all damage on the glowing tail — that’s his weak point.
- Repeat the skull-to-tail cycle through each phase until he falls.
Boss tips: Warden’s Blight melts the boss but eats ammo, so grab the Max Ammo and Max Armor power-ups that appear between phases, refill armor whenever you can, and go in with spare Essence as a safety net. Survive the final phase and the Rex Infernus main quest is complete.
Rex Infernus Easter Egg Rewards
Completing the main quest grants a set of cosmetic and progression rewards:
| Reward | Details |
|---|---|
| Bloodthorn Wonder Weapon Skin | A unique cosmetic skin for the Wonder Weapon |
| Calling Card | Exclusive completion Calling Card |
| 10,000 XP | A one-time XP payout |
| Early-finisher Calling Card variant | A bonus variant if you complete the quest before Directed Mode releases |
Time-limited reward: The special Calling Card variant is only awarded to players who beat the Easter Egg before Directed Mode goes live. If you want the exclusive version, don’t wait for the guided mode — complete it the hard way while you still can.
Round 100 Conqueror Challenge & Side Easter Eggs
Beyond the main quest, Rex Infernus has extra challenges for dedicated players:
- Round 100 Conqueror Challenge — survive to round 100 for an additional reward, a serious test of endurance and setup.
- Mister Peeks music Easter Egg — find all three hidden Mister Peeks headsets around the map to trigger the hidden song.
- Cursed Mode — a brutal modifier that strips the HUD, removes guidance, and starts you with only a pistol, for players who want maximum difficulty.
New Enemies & Wonder Weapon
Rex Infernus introduces fresh threats and gear to learn:
- Deathspinners and the Web Mother — two new enemy types that appear throughout the map.
- Dread Skulls — released when you place the World Seed, tied to the Usurped Flame steps.
- Warden’s Blight — the new Wonder Weapon central to the quest and boss fight.
- Titan Trap — a new environmental mechanic used in the temple cleanses.
Conclusion
The Rex Infernus Easter Egg is a fittingly brutal send-off for Black Ops 7 Zombies — a long, round-gated gauntlet that runs from escaping Her House all the way to crushing the Warden himself. Stick to the order (Pack-a-Punch → Warden’s Blight → repair the Forge → cleanse all four temples → boss), follow the in-game clues on the randomized puzzles, and manage your ammo and armor through the final fight. Pull it off and you’ll walk away with the Bloodthorn skin, a Calling Card, and 10,000 XP — plus bragging rights for finishing the finale. Good luck out there, and don’t forget those Mister Peeks headsets.
For more Black Ops 7 Zombies guides, Easter Egg walkthroughs, and camo unlocks, dive into our latest gaming guides and updates.
Frequently Asked Questions
What are the Rex Infernus Easter Egg main quest steps?
Activate Pack-a-Punch and get the Void Claw, place the World Seed to free the Usurped Flames, build the Warden’s Blight Wonder Weapon, upgrade the Void Claw and repair the Nexus Forge, cleanse all four Shadowsmith temples, then defeat the Warden in the final boss fight.
What are the Rex Infernus rewards?
Completing the main quest grants the Bloodthorn Wonder Weapon Skin, an exclusive Calling Card, and 10,000 XP. Finishing before Directed Mode releases also awards a unique bonus Calling Card variant.
Who is the final boss of Rex Infernus?
The Warden, whose real name is Jack McGregor — the overarching antagonist of the Black Ops 7 Zombies storyline. You beat him by clearing his Shadow Souls and orbiting skulls, then focusing damage on his glowing tail in a repeating cycle.
When did Rex Infernus release?
August 20, 2026, alongside the Black Ops 7 Season 5 Reloaded update. It’s the final round-based Zombies map and closes out the Warden storyline that began earlier in the game.
What is the Warden’s Blight?
The new Wonder Weapon introduced on Rex Infernus. It’s central to completing the temple cleanses and the boss fight, but it consumes ammo quickly, so keep Max Ammo power-ups handy.
Is there a Round 100 challenge on Rex Infernus?
Yes. The Round 100 Conqueror Challenge tasks you with surviving to round 100 for an extra reward, separate from the main Easter Egg. It’s a major endurance test that requires a strong setup.
Are the temple puzzles the same every game?
No. Several steps — symbol sequences, Titan Trap smoke colors, and block orders — are randomized per match, so follow the in-game clues rather than a fixed code. The overall flow stays the same, but the specific answers change.
Can I still get the exclusive Calling Card?
Only if you complete the Easter Egg before Directed Mode launches. After that, the standard rewards remain available, but the special early-finisher Calling Card variant will no longer be obtainable.