Complete the mission "Lost Legion Invasion".
Complete the mission "Eye To Eye".
Defeat the Opha Superior.
Defeat the Empyrean Sentinel.
Complete the mission "Return of Captain Chef".
Deliver Zarpedon's message.
Remove Excalibastard from the stone.
Complete the "Sub-Level 13" missions with 3 other players.
Save the Guardians from the Scav Poachers.
Complete the mission "To Arms".
Complete 30 side missions.
Complete the mission "Marooned".
Complete all of the side missions.
Use the Grinder to create an item.
Defeat the Invincible Empyrean Sentinel.
Revive 10 players with oxygen.
Launch 4 rockets from Elpis.
Open Zarpedon's Chest.
Kill 100 enemies with Wolf.
Kill 100 enemies with the Aspis.
Experience all Vault Hunter Modes using Vault Hunter.EXE.
Kill 10 enemies in a single activation of Showdown.
Complete the mission "Systems Jammed".
Have Purple-rated gear or better equipped in every slot.
Complete level 1 of all challenges with a single character.
Reach level 5.
Reach level 10.
Reach level 25.
Reach level 50.
Try all the Moxxtails in the Up Over bar in Concordia.
Loot 10 Moonstone Chests.
Discover all named locations in Serenity's Waste, Triton Flats and Stanton's Liver.
Discover all named locations aboard the Helios Space Station.
Complete the mission "A New Direction".
Discover all named locations in Outlands Canyon, Outlands Spur and Vorago Solitude.
Discover all named locations.
Unlock 10 Customization Items.
Win a duel.
Have a Lost Legion Eternal kill 3 of his friends.
While airborne, spin 360 degrees then get a kill with a Sniper Rifle without using the scope.
Use the Grinder to create a Legendary item.
Shatter 3 frozen enemies with a single slam attack.
Have an enemy frozen, corroded, ignited, and electrocuted at the same time.
Pancake an enemy in the Stingray.
Complete the mission "Intelligences Of The Artificial Persuasion".
Suffocate for 5 continuous minutes without dying.
Complete all 5 rounds of The Holodome.
Complete the Badass Round of The Holodome.
Complete the Badass Round without going into Fight For Your Life.
Digitize into Claptrap's Brain.
Destroy the Tassiter Proxy.
Successfully recover the Override Key.
Give the H-Source to Jack.
Defeat 5H4D0W-TP.
Outrun the Wheel in the Temple of Boom.
Complete the mission "Let's Build A Robot Army".
Talk to all of Claptrap's Holographic Projections.
Experience all 9 Game Modes and all 9 Modifiers of the Mutator.
Complete a round using the Mutator.
Kill 10 SpyBugs before they take your photo.
Complete the mission "Home Sweet Home".
Complete the mission "Science And Violence".
Complete the mission "Watch Your Step".
