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Silent Night Sneak through the courtyard undetected in Liberation.

Unlocked Potential Fully upgrade a Cybernetics Core.

Galaxy News Radio Completed "Galaxy News Radio"

Backstage Pass Find all of the Delphic Epsilon locks, and finish.

A Stitch in Time Saves 99 Earn 99 Lives.

Leave No Gem Unturned Earn 21 Gems.

99 Percent Perspiration Earn 99 lives.

The hills of Gallipoli Unlock all Codex Entries in The Runner

Bad Reputation Completed the Influence operation.

May His Death Satisfy You Kill Malthael in Hardcore mode.

Botanist Find all of the oleander petals, and finish.

All men dream Unlock all Codex Entries in Nothing is Written

Out of the Frying Pan... Complete "Persona Non Grata", "Turbulence", and "Back on the Grid" on Veteran difficulty.

Pull! Shot an enemy chopper out of the air with a mortar.

Buddy Beater In multiplayer, get the top score on the scoreboard 20 times.
0/20

Well Begun Is Half Done Complete 10 levels in Score Attack with a gold score

Did It All Complete all side missions.

Broken Locks Completed the Security operation.

Combo Beginner Achieved 20 consecutive hits with the Combo Meter equipped

The Champion Campaign: Maxed out your XP and levels.

For Whom the Shell Tolls Destroy all targets during the mortar sequence with only 4 shells in "Back on the Grid."

Saved Private Ryan Save the soldier before he burns to death.

Shut Down Completed the Production operation.

Challenge Accepted Complete the first rank of all non-level-specific challenges with a single character.

The End Finished the story.

On Some Planets They're a Delicacy Shoot all of the slorgs back into the waters of Octonok Cay.

The Best of the Best Complete the campaign on Hardened or Veteran difficulty.

Sound of thunder Unlock all Codex Entries in Through Mud and Blood

Strike! Kill 5 enemies with a single grenade.

Cortex's Terrifying Trial Earn the Key in Jaws of Darkness.

Deadly Specialist Get a Specialist-based medal that requires 3 or more rapid kills while using any Specialist Weapon.

What Goes Up... Destroy all the choppers with only the UGV's grenade launcher in "Persona Non Grata."

BEE! ARGH! BEE! Pick up, and hold on to, a Boomblebee Hive for 60 seconds.

Tranquility Lane Completed "Tranquility Lane"

Cut Your Teeth You were successfully promoted up a rank in multiplayer.

Above & Beyond (Hardcore) Reach level 70 in Hardcore mode.

The Collector Completed a crazy request for Tannis

Smuggler's Blues Completed the Smuggling operation.

Payback Complete "Mind the Gap", "Goalpost", and "Return to Sender" on Veteran difficulty.

Out of bounds Pick up and throw 30 of Vex's minions to their doom.
9/30

School of Hard Knocks Request Stiles to toss you grenades 15 times.

Serious Collector Found 50% of the documents in the game.

Voyeur Spy on people whenever possible, and finish.

Scientific Pursuits Completed "Scientific Pursuits"

Backstabber Kiss Blake... then injure him, and finish.

Way to Go Complete every level in Score Attack with a bronze score or better

The Waters of Life Completed "The Waters of Life"

City of Lights Complete "Bag and Drag" and "Iron Lady" on Veteran difficulty.

Giantslayer - Kill the Heavy within 1 minute Kill the Blood Meridian heavy in under 1 minute

Golden Child Complete every level in Score Attack with a gold score