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Fully Loaded Simultaneously have four completely upgraded weapons

“The ‘I’ in Team” – Expert Rescued the Little Sister in “The ‘I’ in Team” in under 3:00

It's All About the Points Score at least 40,000 points in Survivors.

Audio Enthusiast Collected all Audio Diaries in Burial at Sea - Episode 1.

Robin Hood Kill 30 enemies with Crossbow.

“Worlds of Hurt” - Rescuer Rescued the Little Sister in “Worlds of Hurt”

“The ‘I’ in Team” – Pacifist Rescued the Little Sister in “The ‘I’ in Team” without destroying any Machine Gun Turrets

Gravity is a Bitch! Kill 30 enemies by using the grappling hook and making them fall to their death.

Melonpopper - 15 headshots using the sniper rifle Get 15 headshots using the VC32 Sniper Rifle

Friendship Rules Revive someone from "Fight for Your Life!" that is on your friends list.

“A Shocking Turn of Events” – Collector Found all collectable Roses in “A Shocking Turn of Events”

Overload Use the EMP to take down 10 Steelhead Auger shields

One Eyed Jack Find and kill 'Jack' in Graterford Prison

Breaking and Entering Find a way into the secret base

Decommunization Destroy the biggest statue in front of the children's camp on the TAIGA level.

The Nanny Kill 30 Crawlers without detonating them

No Escape Destroy all Warden vehicles in the Motorpool

“A Shocking Turn of Events” – Master Electrician Charged up the Ferris Wheel 9 different times in “A Shocking Turn of Events”

Frickin' Laser Beams Get to the first mineshaft without being hit by sniper fire in Mt. Pleasant, PA

Snipe Hunt Collect all Deadeye rifles without dying while fighting the Widowmaker in St. Louis

Guide Pass the Research Facility without killing a Blind One on the DEAD CITY level.

Morituri te salutant Survive 30 consecutive waves with at least one co-op player.

Chocolate Chip Confirmed Allow Tiny Tina to arm the moonshot cannon.

Keep the Good Times Rolling Chain a 20-defeated combo in Slayers.

I. AM. INVINCIBLE! Use the Gameplay Tweaker to become invincible... And prove it!

Medusa Freeze 5 enemies at once and destroy them with a blast of the Cryogun's secondary fire

Sightseer You have taken all variations of the helicopter tours of Liberty City.

Decrypted! Defeat the Dark Web.

In This Together Defeat the Widowmaker in Times Square without killing a single Hybrid

Always On Top Perform every ground kill in the game.

The Gully Completed the larger challenge in The Gully coliseum

Epic Dismemberment Dismember 2,500 Necromorph Limbs (single player only)

Last Breath After running out of filters in a hazard zone, craft a new one while suffocating.

Your Destination Assume command of the Order.

Bobble-trap Collected 15 Claptrap bobbleheads

Gobble Gobble You got a turkey in 10-pin bowling.

The Lubricator Found 25 oil cans

What a party! Collected 3 panties, 5 fish in a bag, and 15 pizzas

Survivor Reach Wave 10 in each mission of Special Ops Survival mode.

Kaleidoscope Kill 3 enemies using sniper scope while wearing the Gas mask and using the Night Vision goggles all at the same time.

How's It Hanging? Clean up the Dry Docks

Run and Gunner - Kill 3 Helghast with one burst of assault rifle fire Kill 3 Helghast using an M82 or StA52 assault rifle without releasing the trigger

Tactician Earn 1 star in each mission of Special Ops Mission Mode.

Short Out Defeat the Stalker in under 60 seconds

Stick it to the enemy Survive 15 consecutive waves using the analog combat controls.

Bull in a China Shop Freeze and melee kill 3 Ravagers

Don't Mind Me While using Aether as Colt, kill 3 enemies without alerting nearby enemies.

Nothing But Net Score a basket by lobbing a grenade through a basketball hoop

Bringing the Pain Defeat 50 players using physical attacks in Versus.

Fireworks Use the Wildfire secondary fire to kill 6 enemies in one shot