Complete Challenges in Borderlands 2 to earn customization items and Badass Ranks.

All challenges have five tiers.

Badass Ranks earn you tokens which can be spent on permanent character upgrades that apply to ALL characters associated with your gamer profile. For example if you Redeem token for Maximum Health +1.0%, ALL the characters on your account get Max health +1.0%

List of Challenges in Borderlands 2[edit]

Assault Rifles[edit]

Aggravated Assault

Crouching Tiger, Hidden Assault Rifle

From My Cold, Dead Hands

This Is My Gun

This Is My Rifle

Elemental[edit]

Acid Trip

Boom

Corroderate

Cowering Inferno

I Just Want to Set the World on Fire

Say Watt Again

Slag-Licked

Enemies[edit]

Another Bug Hunt

Bully the Bullies

Constructor Destructor

Cruising for a Bruising

Hurly Burly

Just a Moment of Your Time

Little Person, Big Pain

Load and Lock

Mama's Boys

Marauder? I Hardly Knew 'Er

Paingineering

Short-Chained

Skags to Riches

Tentacle Obsession

WHY SO MUCH HURT?

You No Mad, Bro?

You Dirty Rat

You're One Ugly Mother...

General Combat[edit]

Afternoon Delight

Boomerbang

Critical Acclaim

Gun Slinger

I Got to Boogie

Knee-Deep in Brass

Not Full of Monkeys

To Pay the Bills

Grenades[edit]

Chemical Sprayer

EXPLOOOOOSIONS

Health Vampire

Pull the Pin

Singled Out

Whoa, Black Betty

Health and Recovery[edit]

Badass Bingo

Death, Wind, and Fire

Green Meanie

Heal Plz

I'll Just Help Myself

I'm Back Shocked?

This Is No Time for Lazy

Loot[edit]

Another Man's Treasure

Gun Runner

I Like My Treasure Rare

It's Not Easy Looting Green

Nothing Rhymes with Orange

Open Pandora's Boxes

Purple Reign

The Call of Booty

Melee[edit]

A Squall of Violence

Fisticuffs

Miscellaneous[edit]

Compl33tionist

Haters Gonna Hate

JEEEEENKINSSSSSS

Sidejacked

Yo Dawg I Herd You Like Challenges

Money and Trading[edit]

Dolla Dolla Bills, Y'all

For the Hoard

Limited-Time Offer

Psst, Hey Buddy

Whaddaya Buyin

Wholesale

Pistols[edit]

Deadeye

Hard Boiled

Pistolero

Quickdraw

The Killer

Rocket Launchers[edit]

Gone with the Second Wind

Rocket and Roll

Shield Basher

Sky Rockets in Flight

Splish Splash

Shields[edit]

Ammo Eater

Amp It Up

Game of Thorns

Roid Rage

Super Novas

Shotguns[edit]

Faceful of Buckshot

Lock, Stock, and

Open Wide

Shotgun

Shotgun Surgeon

SMG[edit]

Constructive Criticism

Hail of Bullets

High Rate of Ire

More Like Submachine FUN

Sniper Rifles[edit]

Eviscerated

Leaf on the Second Wind

Longshot

Longshot Headshot

No Scope, No Problem

Snipe Hunting

Surprise

Vehicle[edit]

Blue Sparks

Hit-and-Fun

One Van Leaves

Passive Aggressive

Turret Syndrome

Pirate's Booty DLC[edit]

The following challenges come from Pirate's Booty DLC:

Hovernator

Worm Killer

Land Lubber

Hammerlock's Hunt DLC[edit]

Harder They Fall

Stinging Sensation