AaronNick

Too Hot to Handle Complete the server chamber area without being detected by any HeatEye cameras or enemies.

Bathe With A Giant Nude Alien Take a bath with Toxxo.

Hat Trick Kill 3 aliens with a single shot from the NX-1 Disruptor in Regular or Hardcore difficulty.

Knock Knock Get Slaw to open the security door within the Palisade Blade.

Flipper Flip the level 6 times in Protector mode

KABOOM! Complete “Laboratory”

We Came, We Chainsaw, We Conquered Kill a Bloat with Knifey's new upgrade.

This Make You All Nostalgic? Complete the Part I challenge track in No Return

Don't Reach, Kid Find the basketball and put it in the hoop.

Court Marshal Grant a stay of execution.

Dog Fight Kill a Gargoyle with the Vanguard in Awakening in Regular or Hardcore difficulty.

Mass Exodus Complete the final Ancestor encounter in Regular or Hardcore difficulty.

A Criminal Past Complete A Criminal Past.

Case in Point Complete the Campaign on Veteran difficulty

Hireling Commander Reach level 10 with all Mercenaries.
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Eggstra Nemesis! Complete the Egg-Stra XP challenge and then activate a generator in the Nemesis DLC package.

Collector Extraordinaire Collect 100% of the Prize Bubbles in The Journey Home.

Pull! Complete "Pull!" challenge

Mozambique Here! Ping a Shotgun in Battle Royale.

Alpha Wolf Mountain - Complete the mission on Authentic difficulty.

Natural Talent You finished Mystery Foe without using any active supernatural powers

Radio Silence Throw all four radios off the level in “Factory”

Mux Ado About Shipping Defeat Mux.

Give Away All Your Money Grant the dying wish of a sick slug.

Biggest Fan Finish developer commentary mode

Top of the Heap Reach New York Mastery Level 20.

Squad Chief Helvig Defeated S&R Squad Chief Helvig

Quid Pro Quo Help out a fellow inmate by making a trade.

Biology Lesson Kill a Bloater with the pump shotgun as Bill in No Return

From Führer Away Wolf Mountain - Kill Hitler at a distance of 300 meters or more.
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Code of Conduct Complete A Criminal Past without killing anyone.

Sanguine Serum In Zetsubou No Shima, drink fresh Widow's Wine.

The Architect Successfully build all of the Schematics in Mayday in Regular or Hardcore difficulty.

Dressed for the Occasion Blend in with the proper prisoner jumpsuit.

Reunion Visit another Player's Base

Boosted! Hold Super Boost for 15 seconds in Protector mode

Keep Fighting Killed your first Biobot!

Data Miner Collect all data packs

Field Hospital Get 500 revives (Ranked Match)

Mayday Completionist Complete all Challenges and kill the Kraken in Mayday in Regular or Hardcore difficulty.

Umlauts or no Umlauts Decide the Fixer's fate.

Meet Frasier from Frasier Visit Cheeks and hang out until closing time.

Smooth Operator Earn Elder Rewards from a Daily Op

Demo Pro Destroy 25 vehicles during a single challenge

Spelunker Find all of the Intel in Awakening.

Splicer God Complete the "Wrath of the Machine" raid on heroic difficulty.

I Would Do It All Over Again Complete the story in chronological order

TBoGT: Past the Velvet Rope Score 80% or above in all missions. (The Ballad of Gay Tony)

Fall In Love With A Parasite Find a way to make love to the Parasite Passenger.

Danger Drone Defeat 10 enemies during a single Agency drone ride