The quest Where Angels Fear to Tread is one of the main Story Missions in Borderlands 2.

• After talking to Roland, go convice Claptrap to help attack Jack
• After talking to Claptrap in Sanctuary, fast-travel to Thousand Cuts and meet up with him again
• Let Claptrap go through the barrier, and shut it off
• Fight your way through the enemies with the help of Brick's Buzzards
  • Watch out for the Constructor at the gate
• Once the enemies are dead, continue up the hill
  • Mortars will start attacking you, so avoid the red circles on the ground
• Destroy the turrets on the wall to open the large gate
• Kill all the enemies that come spilling out
• Work your way up to the auto cannon and destory it for the Buzzards
• Destory 11 more auto cannons while taking out enemies

• Now it's time to face the BNK3R
  • Focus on the auto cannons so the Buzzards can lend support easier
  • Stay up on the top platform, it provides cover from many attacks

• Once destroyed, enter the elevator and pass the bio-scans
• Descend into the core
• Press the button to open up the door to Angel

• Fight the waves of enemies
  • Make sure to stock up on ammo from Angel
  • Put immediate attention to the turrets that generate from the central unit
• Take down the Eridium injectors one by one with the help of Roland and Lillith
• Turn in to Roland

Brief

Angel is dead, and the Crimson Raiders are in possesion of the Vault Key. It's time to take down Handsome Jack.

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