The past couple of Black Ops games have contained some mysterious Dark Ops Challenges, and Call of Duty: Black Ops Cold War continues that trend. The objectives and stipulations for these challenges are unclear until you actually complete them, which is in line with the cryptic nature of the game’s themes. Still, it doesn’t hurt to look for help when you have no idea what you’re looking for. While these challenges do not contribute towards your completion percentage for challenges, they do unlock unique Callsigns and give you a significant amount of XP.

Here are all of the Dark Ops Challenges across Multiplayer, Zombies, and Campaign in Call of Duty: Black Ops Cold War.

Multiplayer

  • Relentless Killer – Earn 10 Relentless medals (10 killstreaks of 20)Brutal Killer – Earn a Brutal medal (25 killstreak)Nuclear Killer – Earn a Nuclear medal (30 killstreak)Frenzy Killer – Earn a Frenzy Kill medal (5 kills in rapid succession)Mega Killer – Get a Mega Kill medal (6 kills in rapid succession)Ultra Killer – Get an Ultra Kill medal (7 kills in rapid succession)Chain Killer – Get a Kill Chain (killing more than 7 enemies in rapid succession)From the Depth – Get 25 kills against enemies that are on land or a ship’s surface when you are shooting at them from underwater with a primary or secondary weaponHard Wipe – Single-handedly eliminate an entire squad of 4 players in a Fireteam modeBack At You – Throw a Frag Grenade back and kill the enemy that threw the grenade at youNuked Out – Earned a Nuclear medal in Free-For-All without using Scorestreak rewardsVery Nuclear – Earn a Nuclear medal with 21 different weapons with all kills coming from that weaponUnderwater Ops – While underwater, plant C4 on an enemy-occupied Gunboat or Wakerunner and detonate to destroy the vehicle and kill the occupants 5 timesDark Ops Master – Complete all Dark Ops challenges

Zombies

  • Reaper of the Undead – Kill 1,000,000 enemiesArmed to the Teeth – Have 2 fully Packed Weapons with Ammo Mods equipped and 6 Perks activeSocial Distancing – Reach Round 20 without getting hitThe Anvil – Exfil a game using only melee attacksAnother Round? – Reach Round 100Good Enough – Reach Round 20 with only your starting loadout and no upgrades.Invincible – Reach Round 30 without going downCheckmate – Play each trial of Die Maschine in a single matchHarbinger of Doom – Kill 50 enemies with one support itemEvil Unleashed – Complete the main quest for Die MaschineBox Addict – Purchase all the weapons in the Mystery Box in a single matchKing of the Silverbacks – In Dead Ops Arcade, earn a cumulative score of 999,999,999Pristine Pelt – In Dead Ops Arcade, beat Mamaback in the final round without ever dyingDark Ops Master – Complete 11 Dark Ops challenges

Campaign

  • Retro Gamer – Unlock all arcade machinesWhat Do the Numbers Mean? – Decrypt the Operation Chaos floppy diskDefiant – Attempt to jump to your death in Break on ThroughAnti-Hero – Wipe out your former teammates using brute force in Ashes to AshesCover Your Tracks – Stash away five bodies as Belikov in Desperate MeasuresAwkward Chat – Answer Imran Zakhaev’s questions correctly in the elevator in Desperate MeasuresDark Ops Master – Complete all Dark Ops challenges