Borderlands 2 has an achievement called Challenge Accepted, which requires the same character to complete LV 1 of all non-level-specific challenges, i.e. 113 challenges in 17 categories from "Enemy" to "Miscellaneous" in the Tab Rank level, which can be achieved by completing LV 1.
Completed level 1 of all non-level-specific challenges with a single character.
Note: "Bastard Rank" is a translation of Tianqiao Chinese Bag, the original name in English is "Badass Rank", and in some places it is also translated as "Bad Boy Points".
Most of these challenges are simple and most of them are unconsciously completed during playthrough, although some can be time-consuming and require a little patience, and it will be easier to kill enemies in relatively low-level areas as characters and equipment level up.
Completing all of the challenges in the game is not required to achieve the Challenge Accepted achievement, and this guide only lists the challenges required to achieve that achievement (LV 1). Some challenges require completing other challenges or reaching a specific map to unlock, and this guide will also give you the conditions to unlock them. It is worth mentioning that unlocked challenge data will also accumulate, but it will not be displayed.
For a complete achievement guide, please refer to Borderlands 2: Steam Full Achievement Guide | Wu San Dao".
Enemies
Little Person, Big Pain
Kill 10 gnomes (Midget).
Bully the Bullies
Kill 25 Bullymongs.
Cruising for a Bruising
Kill 10 strong men (Bruiser).
Predator? I don't know her (Marauder?). I Hardly Know ‘Er）
Kill 20 Marauders.
You Dirty Rat
Kill 10 rat-men (Rats).
Mama's Boys
Kill 50 Psycho.
You're not crazy, are you? （You (No)Mad, Bro?）
Kill 10 Nomads.
Short-chained
Shoot chains to free the Midget on 1 shield.
Air Salute (Hurly Burly)
Hit 10 throws thrown into mid-air by Bullymong.
Take up your time... （Just a Moment of Your Time... ）
Destroy 10 Surveyors.
Why does it hurt so much?! （WHY SO MICH HIRT?! ）
Kill 10 Goliath.
Paigineering
Kill 10 Hyperion personnel.
Constructor Destructor
Destroy 5 Constructors.
Another Bug Hunt
Kill 10 locusts (Varkid).
Unlock map: Tundra Express.
Tentacle Obsession
Kill 10 sharks (Thresher).
Unlock the map: Highlands - Outwash.
Pest Control
Kill 10 Spiderants.
Unlock the map: Frostburn Canyon.
Crystals Are a Girl's Best Friend
Kill 10 Crystalisk.
Unlock the map: The Fridge.
Pod Pew Pew
Eliminate 10 pre-hatching locust pods (Varkid pods).
Unlock map: Tundra Express.
Die in the Friendly Skies
Destroy 10 Condor helicopters (Buzzard).
Unlock the map: The Dust.
You're an ugly... （You’re One Ugly Mother... ）
Kill 10 Stalkers.
Unlock the map: Highlands - Outwash.
Skags to Riches
Kill 10 mutant dogs (Skag).
Unlock the map: Three Horns - Divide.
Elemental
Scum licking slag (Slag-Licked)
Deals 5,000 extra damage to slag-contaminated enemies.
Rumble! （Boom.）
Take out 10 enemies with explosive damage.
Cowering Inferno
Set 25 enemies on fire.
Say 'Watt' Again
Deals 5000 electric shock damage.
Corroderate
Causes 2500 points of corrosion damage.
I Just Want to Set the World on Fire
Deals 5000 burn damage.
Acid Trip
Kill 20 enemies with corrosion damage.
Loot
Open Pandora's Boxes
Open 50 scrapable chests, safes, and more.
The Call of Booty
Open 5 chests.
Nothing Rymes with Orange
Pick up or purchase 1 orange item.
Purple Reign
Pick up or purchase 2 purple items.
I Like My Treasure Rare
Pick up or buy 5 blue items.
It's Not Easy Looting Green
Pick up or buy 20 items in green letters.
Another Man's Treasure
Pick up or purchase 50 items in white.
Gun Runner
Pick up or buy 10 weapons.
Money And Trading
Hey, hey, bro... （Psst, Hey Buddy... ）
Make 1 trade with other players.
What do you want to buy? （Whaddaya Buyin’?）
Purchase 2 items with neodymium ore.
Limited-Time Offer
Purchase 1 item of the day.
Wholesale (Wholesale)
Sell 10 items to vending machines.
To accumulate wealth! （For the Hoard!）
Save $10,000.
Money, money, money, I want it all! （Dolla Dolla Bills, Y’all）
Collect $5,000 by picking.
Vehicle (Viechle)
Passive Aggressive
Kill 1 enemy as a passenger (non-gunner) in the vehicle.
Turret Syndrome
Use turret or vehicle weapons to destroy 10 enemies.
Blue Sparks
Kill 5 enemies by bumping with vehicles while drifting (default shortcut G).
Hit-and-Fun
Crush 5 enemies with vehicles.
...... A van ascended to heaven (...) One Van Leaves）
Destroy 5 vehicles with vehicles.
Health And Recovery
I'll Just Help Myself
Complete 5 in-place resurrections by killing enemies.
No time to be lazy! （This Is No Time for Lazy!）
Revive 5 online teammates.
Just kill the bastards (Badass Bingo)
Complete 1 in-place resurrection by killing bastard enemies.
Please treat (Heal Plz)
Restore 1000 health points.
Death, Wind, and Fire
Kill enemies with burning sustained damage to complete 1 in-place resurrection.
Pre-Challenge: Elemental Class - Cowering Inferno LV 1.
Green Meanie
Kill enemies with Corrosion Sustained Damage to complete 1 in-place resurrection.
Pre-Challenge: Elemental - Acid Trip LV 1.
I am back! Still shaking? （I’m Back! Shocked?）
Use electric shock sustained damage to kill enemies and complete 1 in-place resurrection.
Pre-Challenge: Elemental - Say 'Watt' Again LV 1.
Grenades
Wow, Black Betty
Take out 10 enemies with fireworks thunder (bouncing Betty).
Health Vampire
Kill 10 enemies with vampire grenades.
Pull the Pin
Use grenades to blow up 10 enemies.
Chemical Sprayer
Kill 10 enemies with area effect grenades.
Big Bang Bang Bang! （EXPLOOOOOSIONS!）
Use cluster grenades to take out 10 enemies.
Singled Out
Take out 10 enemies with singularity grenades.
Shields
Ammo Eater
Absorb enemy 20 rounds of ammunition with absorption shields.
Steroid Rage
Kill 5 enemies with the "Fight" shield bonus.
Game of Thorns
Use the damage of the Stabbing Shield to bounce off to kill 5 enemies.
Amp It Up
Kill 5 enemies with the amplified shield bonus.
Super Novas
Kill 5 enemies with the explosion of Nova Shield.
Rocket Launcher
Rocket and Roll
Kill 10 enemies with bazookas.
Gone with the Second Wind
Use the bazooka to complete 2 in-place resurrections.
Rockets soar into the sky... （Sky Rockets in Flight... ）
Use bazookas to kill 25 enemies at a distance.
Pre-challenge: Gone with the Second Wind LV 1.
Splish Splash
Kill 5 enemies with splash damage caused by rockets.
Front Challenge: Rocket and Roll LV 1.
Shield Basher
Take out 5 enemies with shields with a single-shot rocket.
Front Challenge: Splish Splash LV 1.
Take you to heaven! （Catech-a-Rocket）
Kill 5 enemies with direct bazookas.
Front challenge: Splish Splash LV 5.
Sniper Rifle
Longshot
Take out 20 enemies with a sniper rifle.
Longshot Headshot
Fire 25 critical hits with a sniper rifle.
Leaf on the Second Wind
Complete 2 resurrections in place with a sniper rifle.
Eviscerated
Kill 5 shielded enemies with one sniper rifle cartridge.
Front Challenge: Longshot LV 1.
No Scope, No Problem
Kill 5 enemies with a sniper rifle without opening the camera.
Front Challenge: Longshot LV 1.
Snipe Hunting
Kill 10 enemies with a sniper rifle crit.
Front challenge: Longshot Headshot LV 1.
Surprise! （Surprise!）
Kill 5 enemies who haven't noticed you yet with your sniper rifle.
Front Challenge: No Scope, No Problem LV 1.
Assault Rifle
Aggravated Assault
Kill 25 enemies with assault rifles.
From My Cold, Dead Hands
Complete 5 in-place resurrections with assault rifles.
This is my rifle... （This is My Rifle... ）
Fire 25 critical hits with assault rifles.
...... This is my gun (...) This is My Gun）
Kill 10 enemies with an assault rifle crit.
Challenge: This is my rifle... （This is My Rifle... ）LV 1。
Crouching Tiger, Hidden Assault Rifle
Use assault rifles to squat fire to kill 25 enemies.
Front Challenge: Aggravated Assault LV 1.
Submachine gun (SMG)
弹雹（Hail of Bullets）
Use submachine guns to kill 25 enemies.
Constructive Criticism
25 critical hits from submachine guns.
More Like Submachine FUN
Complete 2 in-place resurrections with submachine guns.
Pre-challenge: Constructive Criticism LV 1.
High Rate of Iré
Kill 10 enemies with submachine gun crit.
Shotgun
Faceful of Buckshot
Fire 50 critical hits with a shotgun.
Canister! （Shotgun!）
Kill 25 enemies with a shotgun.
Pull the bolt, set up the gun, and ... （Lock, Stock, and... ）
Bend 2 times with a shotgun to revive in place.
Shotgun Surgeon
Kill 10 enemies with shotgun crit.
Open your mouth! （Open Wide!）
Use the shotgun to kill 750 enemies at close range (LV 5).
Note that this challenge requires LV 5 to unlock the Shotgun Sniper challenge.
Sniper with a shotgun (Shotgun Sniper)
Use the shotgun to kill 10 enemies from a distance.
Pre-challenge: Open your mouth! （Open Wide!）LV 5。
Pistol
Hard Boiled
Complete 2 in-place resurrections with a pistol.
The Killer
Kill 25 enemies with a pistol.
Sharpshooter (Deadeye)
25 critical hits with a pistol.
Quickdraw
Quickly take out 10 enemies after entering the aim with the pistol.
Pre-challenge: The Killer LV 1.
Musketeers (Pistolero)
Use pistol crit to kill 10 enemies.
Front Challenge: Deadeye LV 1.
Melee Attack (Melee)
Fist fight! （Fisticuffs!）
Take out 25 enemies with melee attacks.
A Squall of Violence
Kill 20 enemies in close combat with bayonet firearms.
Pre-challenge: Fisticuffs! LV 1.
General Combat
Knee-Deep in Brass
Fire 1000 rounds.
Afternoon Delight
Kill 50 enemies during the day.
...... Solvable (...) To Pay the Bills）
Activate the active skill flagship to kill 20 enemies.
Critical Acclaim
Kill 20 enemies with critical hits.
...... Makes me swing (...) I got to Boogie）
Kill 10 enemies at night.
Explosive gun (Boomerbang)
Kill 5 enemies with a reshell blast (smashing gun) from a Tediore gun.
Gun Slinger
Explosion (smashing the gun) with a Tediore gun deals 5000 damage.
Not Full of Monkeys
Take out 10 enemies with a fixed element bucket.
Miscellaneous
Jerkin Kingins !!! （JEEEEENKINSSSSSS!!! ）
Find and kill Jimmy Jenkins 1 time.
In the warehouse next to the Blood Eagle Feather gate at the Wildlife Exploitation Preserve, there are 4 cardboard boxes that will appear in Tanis to take the "Follow the Doctor's Advice" mission.
Note that only if you receive the "Please follow the doctor's advice" task and do not complete it, you will stably brush out 3 small robots, among which there is a probability of Jimmy Jenkins, if you complete the task, you can only rely on character, so brush it repeatedly here before completing the task.
Sidejacked
Complete 5 side quests.
Perfectionist (Compl33tionist)
Complete 10 optional mission objectives.
Haters Gonna Hate
Win 1 duel.
Yo Dawg I Herd You Like Challenges
Complete 5 challenges.
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Borderlands 2: Challenge Accepted Achievement Guide | U San Dao