BO7 Jingle Hells and List Keeper's Challenge - Full Guide

The BO7 holiday update introduced two limited-time Zombies modes that are much harder than they first appear. Jingle Hells adds freezing survival mechanics, while List Keeper’s Challenge is a gauntlet-style mode with strict rules, riddles, and one of the hardest boss fights in Black Ops 7.

This guide explains how both modes work, how long they last, what rewards you get, and how to complete them without soft-locking your run.

Quick Summary

• Jingle Hells is a holiday survival mode with freezing mechanics and an optional Easter Egg
• List Keeper’s Challenge is a gauntlet-style mode with 10 mandatory challenges and a unique boss fight
• Preparation mistakes can permanently ruin a run
• The boss can only be damaged with weapons from presents
• Both modes are limited-time and tied to the holiday event

What Is Jingle Hells in BO7 Zombies?

Jingle Hells is a Christmas-themed Zombies mode set on a winter version of Astra Malorum. The map is covered in snow, and players must manage freezing while surviving standard Zombies rounds.

Jingle Hells Core Mechanics

• Staying outdoors too long causes freezing and heavy movement slowdown
• Fire barrels can be lit to warm up
• Snowballs spawn across the map and can freeze enemies
• Frozen zombie kills can drop presents

Naughty or Nice Power-Up

• Naughty: Spawns Ravagers that immediately pressure the team
• Nice: Drops three presents with weapons or equipment

Jingle Hells Rewards

• Bonus XP
• Holiday GobbleGums
• Exclusive Calling Cards
• Extra rewards for completing the Jingle Hells Easter Egg

Jingle Hells Completion Tips

• Light multiple barrels early to create safe warming routes
• Cryofreeze is the most reliable way to farm presents
• Use snowballs to freeze, not to deal raw damage
• In co-op, assign one player to manage barrels and warming paths

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What Is the List Keeper’s Challenge?

List Keeper’s Challenge is a limited-time Zombies mode added on December 16, 2025 during Season One. It replaces traditional quests with a fixed sequence of ten riddle-based challenges and ends with a unique boss fight.

How It Differs From Jingle Hells

• Progression is locked behind mandatory challenges
• Challenges must be completed in a fixed order
• Power and Pack-a-Punch are active from the start
• Most standard Easter Eggs are disabled

Before You Start List Keeper’s Challenge

This section is critical. Many failed runs happen before Challenge 1 even finishes.

• Do NOT apply ammo mods before Challenge 2 activates
• Do NOT pop Perkaholic early
• In co-op, assign ONE player for the headshot challenge
• Avoid Elemental Pop until after Challenge 8
• Do not rush rounds, higher rounds make later challenges harder

List Keeper’s Challenge Core Mechanics

Shared With Jingle Hells

• Freezing when outdoors
• Fire barrels for warmth
• Snowballs and Cryofreeze
• Presents from frozen zombie kills

Unique to List Keeper’s Challenge

• Exactly 10 challenges must be completed
• Riddles hint objectives before tracking starts
• Progress is shared across the entire team
• Pack-a-Punch crystals can drop from presents

List Keeper’s Challenge Walkthrough

Early Setup Challenges (1–3)

Challenge 1: Light 6 Barrels
Barrels are visible on the tac map and always spawn in fixed locations.

Challenge 2: Upgrade a Weapon
On the same weapon:

• Pack-a-Punch it
• Add an ammo mod
• Upgrade rarity

Do not complete these steps before the challenge activates.

Challenge 3: Free 10 Zombies From Snowmen
Only snowmen that spawn zombies count. Loot-only snowmen do not.

Mid-Game Resource Challenges (4–6)

Challenge 4: 100 Mystery Box Kills
Ammo caches are disabled. Spin the box again if you run dry.

Challenge 5: 50 Fireworks Ammo Mod Kills
Fireworks must land the killing blow. Early planning helps here.

Challenge 6: 100 Equipment Kills
Combat axes, grenades, monkeys, and crafted equipment all work.

Execution Checks (7–9)

Challenge 7: Survive Outside for 5 Minutes

• Timer pauses if you stop killing
• Timer pauses if you go indoors
• Kill slowly near barrels

Challenge 8: 25 Critical Kills in a Row
The most failed challenge.

• No ammo mods
• No Elemental Pop
• Only one player should attempt it
• Ravagers can easily break the streak

Challenge 9: Give Gary 10 Presents
Gary is friendly and collects presents dropped from frozen kills. Use Cryofreeze or Frost Blast.

Endgame Gate (10)

Challenge 10: Survive 5 Rounds
Use this time to buy perks, craft equipment, and prepare for the boss fight.

Solo vs Co-op Difficulty

Aspect	Solo	Co-op
Early Challenges	Manageable but slower	Much faster with coordination
Headshot Challenge	Very punishing	Easier if one player is assigned
Outdoor Survival	High pressure	Barrel rotation is easier
Gary Present Challenge	RNG dependent	Multiple freeze sources help
Boss Fight	Extremely RNG-heavy	Strongly recommended
Overall Difficulty	Very High	High but manageable

List Keeper’s Challenge Boss Fight Guide

After Challenge 10, a portal opens to Mars where players face The Unlisted, a modified final-phase Caltheris.

Boss Arena Hazards

• Permanent freezing
• Limited fire barrels
• Anti-gravity movement
• High environmental damage

How Boss Damage Works

Only weapons obtained from presents during the boss fight can damage the boss. All weapons brought into the arena are ineffective.

Recommended Boss Strategy

• Spam Cryofreeze and Frost Blast to generate presents
• Assign one player to distract the boss
• Rotate warming at barrels constantly
• Use Kazimirs to control zombie pressure

Need Help Completing the List Keeper’s Challenge?

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Final Tips for Both Holiday Modes

• Cryofreeze is the most important ammo mod overall
• Preparation matters more than raw skill
• Do not rush progression unnecessarily
• Both modes are limited-time

Conclusion

Jingle Hells and List Keeper’s Challenge add a unique holiday twist to BO7 Zombies, but they also introduce strict mechanics and punishing failure points. Whether you complete them yourself or choose guaranteed completion, make sure you experience both modes before the event ends.

Frequently Asked Questions

Why did my headshot streak reset even though I aimed at the head?

Ammo mods, Elemental Pop, or another player getting a non-critical kill can break the streak. Only one player should attempt this challenge.

Why didn’t Challenge 2 track even though I upgraded my weapon?

If you Pack-a-Punch or apply an ammo mod before the riddle activates, progress may not count. Always wait for the challenge text.

Why did the outdoor survival timer stop?

The timer pauses if you stop killing zombies or step indoors. It does not reset, but it will not progress until both conditions are met again.

Gary stopped picking up presents. Is my run bugged?

Usually not. Move away, teleport, or ping nearby presents. Gary often resumes movement after resetting his pathing.

Why does the boss take no damage from my weapons?

Only weapons obtained from presents during the boss fight can damage the boss. All pre-existing weapons are ineffective.

Is the List Keeper boss supposed to be this hard?

Yes. The fight is heavily RNG-based and considered one of the hardest BO7 Zombies encounters. Many players fail even with optimal play.