"Defeat Blendo" is an objective in the sidequest Victims of Vault Hunters in Sir Hammerlock vs. The Son of Crawmerax.
Walkthrough[edit]
Head over to the Western corner of the house at the high point of the walkway. You will see a door you can open. Open it and go through it. You will see someone hung from a tree. Approach and investigate them to find Blendo. Sparky Flynt will contact you in a rage. He will have also notice the pattern in full:
Dialogue[edit]
Sparky Flynt: Hanged? What?! Who did -- who would -- SO ANGRY. Whatever. Two assassins left, but they're probably dead as hell.