Completed level 1 of all challenges with a single character.

Had an enemy frozen, corroded, ignited, and electrocuted at the same time.

Find 10 Difference

Shattered 3 frozen enemies with a single slam attack.

Looted 10 Moonstone Chests.

Completed a round using the Mutator.

Gave the H-Source to Jack.

Killed 100 enemies with the Aspis.

Tried all the Moxxtails in the Up Over Bar in Concordia.

Completed the Badass Round of The Holodome.

Killed 100 enemies with Wolf.

Suffocated for 5 continuous minutes without dying.