Kill Sanctuary squatters: 0/25 (optional)
   Retrieve safe
   Pick up lewd pictures: 0/3
   Bring pictures to Marcus 

       -OR- 

   Bring pictures to Moxxi 

After locating the safe in the Caustic Caverns, a giant crystalisk named Blue will appear. Blue differs from normal crystalisks in that he can generate juvenile exploding crystalisks that can pursue characters into places where he can't follow. He also has a ranged shock attack that can ravage an attacker's shields in short order. Blue does share the crystalisks' weakness of easily targeted critical hit spots on his legs however, and can be beaten with damage directed at these areas. Each time a crystal breaks, Blue will recoil for a short time, during which it will stop attacking. Rocket-launchers and bladed weapons will finish him off in no time.

After the safe is opened, both Marcus and Moxxi send transmissions asking that the pictures found inside be returned to them. The pictures can be turned in to Marcus for the Lucrative Opportunity, or to Moxxi for a variant of Miss Moxxi's Heart Breaker. A new era of shoot and loot is about to begin. Play as one of four new vault hunters facing off against a massive new world of creatures, psychos and the evil mastermind, Handsome Jack. Make new friends, arm them with a bazillion weapons and fight alongside them in 4 player co-op or split-screen on a relentless quest for revenge and redemption across the undiscovered and unpredictable living planet. Story

Borderlands 2 follows the story of four new Vault Hunters as they fight to free Pandora from the clutches of Handsome Jack, the brilliant, charismatic, and utterly despicable CEO of the Hyperion Corporation.