TIOSK

What does it mean? I can't even capture it on my camera.

Stone Cold Pinkerton Completed the Main Campaign on Hard difficulty or above.

You're On Your Own Proceed to the mining complex

Empty Platform Secure the train station

Decked Out Have Purple-rarity gear or better equipped in every slot.

Without Question Complete 6 Secondary Objectives

Vault Hunter Superior Defeated the Opha Superior.

Side Quest Student Completed 30 side missions.

It's On Like General Kyong Defeat General Kyong

Going Underground Enter the mines

Keen Observer Tag 30 enemies using the binoculars

I'm Coming Home Escape the mysterious structure under the mountain

Drift King Perform a 180 powerslide with Dominus or Takumi

Sabre Rattler Kill 100 enemies with the Sabre turret.

Showstopper Interrupt 3 foes at the same time.

No Fly Zone Destroy 5 helicopters

Pancake Parlor Pancaked an enemy in the Stingray.

God of Hope Master Valhalla and master thyself

Multi Face-eted Defeated the Empyrean Sentinel.

Expedition Team Escort Prophet to safety

I'm A Marine, Son! Help the marines evacuate

On Cloud 99 Earn 99 Lives.

Strickland Would Be Proud Defeat the flight deck invader

Tribute To A Vault Hunter Get an item from Michael Mamaril.

Bolmus Bond Robert joins Aurora's Party.

Grassroots Finish 3 Lemurian Requests.

Close Encounter Secure victory in the Battle of Lingshan

Crysis Controlled Complete the game on any difficulty

Choke Hold Kill 20 enemies with grab

Team Raptor Kill 400 enemies

Wayfarer Visit all 9 Realms in Valhalla

Blight Explorer Discover all named locations in Eridium Blight, Arid Nexus, and Sawtooth Cauldron.

Welcome Back Play the game after a week long break.

The Student Surpasses the Master Beat BX time in 'S.S.D.D.'.

An Inch and 6.2 Miles Drive 10 km with the Vortex, Cristiano, or Spinner Wheels

Modern Fart Completed the mission "To Arms".

Perfect, Soldier! Complete all Secondary Objectives

Definitely An Italian Plumber Kill Donkey Mong.

Fight the Fear Croft Manor: Defeat 100 enemies in Lara's Nightmare

Weapons Master Perform a kill with every firearm

Immortal Complete every missions without dying or reloading to a checkpoint at any difficulty.

You Again? Find all 3 Boat Captain Keys

Collector Add all secret shells to your collection.

Ecosystem Release fish from all the hidden pools.

Nano Ninja Perform 5 consecutive kills without being spotted by an enemy

Natural Progression Win an Online Match with Backfire, Scarab, or Zippy

Knock-off Knockout Kill an enemy Nanosuit soldier with a Strength punch

Tragedy Tristis joins Aurora's Party.

This Is My Rifle Customize a weapon to use all 5 modification points

Easy Come, Easy Go Acquire more than 15,000 Fleeting Echoes on a single attempt