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More orbs than your house has room for Collect 2500 orbs in a single game.

Astrophysicist Complete all the Cross-Controller Pack Tutorials

Worm for the Job Complete all Worm Ops missions.

Going Up? Get into the telescope assembly bay.

Baker's Dozen Kill 13 enemies with bread
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Big Bada Boom Kill at least four enemies with one GL40 grenade launcher shot.

Long Bomb Kill an enemy with a Tetranite Grenade from at least 200 feet away.

Envy King Obliterated Weirdo

Mark of the Assassin Defeated Duke Prosper, with or without Tallis. ("Mark of the Assassin" downloadable content)

Cold Hearted Complete No Negotiation without saving any hostages.

Retire the Master Beat the City Champ.

Wooly Wisdom Find the chamber dedicated to the humble Llama and make an offering.

Most Escape Alive In Blood of the Dead, escape

Secret Moustache World Find and complete the Secret Moustache World!

Change of Heart Achieve a total of 100 Grind-Switches

We've Only Just Begun In The Tortured Path, successfully escape from Into the Storm.

Window Shopping Let the wind take you through

Small Consolation In Shangri-La, use the 31-79 JGb215 on each type of zombie.

Naughty King Obliterated Casanova

The Bigger They Are… Complete Collapse and Fracture in Co-Op Campaign

A Classical Mechanic Complete any level in Newtonian mode.

Gotta Get Rifty Complete "Rifty Business"

Last Survivor Win a game 10 times.

Trial by Fire+Lightning Beat all the Trials in the Main Campaign on Hard difficulty.

There Is Kindness in You Accept The Song's compromise

Commis Chef Complete the tutorials

Assassin Vs. Machine You completed Train Runner before the train arrives at the station

Creeper In The Woods Complete Creeper Woods on Apocalypse difficulty, without defeating any mobs.

Silver bullet Obtain a silver medal in 10 different challenges

Blackjack Subtle Evaded vault security in Chateau Haine. ("Mark of the Assassin" downloadable content)

Goal Driven Complete 10 Weekly Challenges.

Trial by Fire+Lightning+Death Beat all the Trials in the Main Campaign on Bananas difficulty.

Uncle Time Finish the first mission for each of the 4 time trials.

One Against All Kill Orcus while in a 6 person squad in MWZ

Heart Of Iron Achieve Rank 15.

Do You Have an Appointment? Reach the Executive level.

Slaughterhouse Kill 50,000 total Enemies in MWZ

Phantom in the Hull Reach level 18 in survival mode.

Whirlwind Warrior Using the Tempest Knife, defeat 10 Mountaineer mobs within 10 seconds.

The Doctor is In Use PhD Slider to fall 10 feet and kill 10 zombies at once

Infernal Jungle Collect 10,000 Aberrant Cinders in Nahantu Helltides.
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Rags To Riches Have $1 million dollars in the bank while playing in Los Angeles.

Ready For Action Complete the Multiplayer Training Course in Black Ops 7

The Ultimate Race Win 1 Quick Race in the AcceleDrome (not unlockable in Online and Split Screen modes).
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Das ist gut In The Shadowed Throne, find the Ubersprengen.

Zombie Fanatic In Blackout, unlock Bruno, Scarlett, Diego, Shaw, Dempsey, Takeo, Nikolai and Richtofen

Prison Break Complete Quarantine and Suppression in Co-Op Campaign

Indomitable Complete a tower run on Apocalypse difficulty.

Bad Omen, Good Loot Complete 10 missions where the difficulty has been modified by a Raid Captain's Banner.

Coup De Gracie Use Junker Queen’s Jagged Blade and Carnage to pull and kill an enemy in Quick or Competitive Play.