Completed level 1 of all non-level-specific challenges with a single character

Allowed a Goliath to level up four times before killing him

Completed Round 5 of any Circle of Slaughter

Reached level 5

Reached level 10

Reached level 25

Reached level 50

Discovered all named locations in Three Horns, Tundra Express, and Frostburn Canyon

Discovered all named locations in Sanctuary, Opportunity, and Lynchwood

Discovered all named locations in The Highlands, Thousand Cuts, and Wildlife Exploitation Preserve

Discovered all named locations in Eridium Blight, Arid Nexus, and Sawtooth Cauldron

Discovered all named locations

Tipped Moxxi $10,000

Had Purple-rated gear or better equipped in every slot

Killed 100 enemies with the Sabre turret

Phaselocked 100 enemies

Gunzerked continuously for 90 seconds

Killed a Chubby

Got an item from Michael Mamaril

Killed Donkey Mong

Killed a flying enemy with a thrown Tediore weapon

Redeemed 25 tokens

Remained in Zero's Deception mode for ten seconds straight

Killed a Constructor without it ever building another bot

Unlocked 10 customization items

Revived someone from "Fight for Your Life!" that is on your friends list

Purchased 5 items from the black market

Gave Claptrap a high five

Completed 20 side missions

Completed all side missions

Completed the mission "My First Gun"

Completed the mission "Best Minion Ever"

Completed the mission "The Road To Sanctuary"

Completed the mission "Plan B"

Completed the mission "Hunting The Firehawk"

Completed the mission "A Dam Fine Rescue"

Completed the mission "A Train To Catch"

Completed the mission "Rising Action"

Completed the mission "Bright Lights, Flying City"

Completed the mission "Wildlife Preservation"

Completed the mission "The Once and Future Slab"

Completed the mission "The Man Who Would Be Jack"

Completed the mission "Where Angels Fear To Tread"

Completed the mission "Toil And Trouble"

Completed the mission "Data Mining"

Defeated Jack

I can't even capture it on my camera

Completed the mission "Shoot This Guy in the Face"

Defeated Terramorphous the Invincible

Opened the chest at the bus stop in Fyrestone