Guild Wars 2 – Help Waldo Flood get revenge on local bandits

“Kill bandits, steal bandit supplies and destroy bandit cannons.”

Head to the East of the entrance to Kessux Hills from Queensdale. You will find Waldo Flood hidden behind a tree. Approach and speak with him to learn more of what he is after:
Waldo Flood: “Those worthless, foul-mouthed, thieving bandits took everything I own! I have to get back at them. Will you help?”
Hero: “What do you need?”
Waldo: “Just kill them, all of them! Or destroy their supplies. Maybe steal their stuff. That would be some poetic justice.”
Hero: “I'll do what I can.”

First, simply killing bandits. They are quite abundant and easy to find. Just wipe them out whenever you have the chance. Just head to the East and you will find more than enough to finish the quest on them alone

For stealing supplies, head to the East of Waldo Flood. You will find Jannaj's Bandit's camp. Look around for sack of Bandit supplies. Interact with them to loot and steal the supplies. You will get a small bag of goods. It can also be shattered lockpicks. There are only a few drops available through it. This is not a certain thing but it does help get plenty of extra little items.

Finally, you will notice Bandit Supply Barrels. Destroy these to also earn some progress along the way. They do not drop anything but they do not take very long at all to destroy.

When you finish the renown quest you will get the letter, “Vengeance is Mine” with 94 copper:
“Nothing is sweeter than imparting vengeance on an enemy. I'm grateful for your assistance.

“The bandits got what they deserved – Waldo Flood”

Head back to Waldo Flood because he now has Karma Items for sale:
Backwoods Dagger of Force: 280 Karma
Dagger, Weapon Strength: 204 – 217, +10 Precision, Minor Sigil of Force (+1% Damage), Lvl. 15
Krytan Dagger: 140 Karma
Dagger, Weapon Strength: 188 – 200, +9 Precision, Lvl. 15
Waldo's Special Torch of Force: 280 Karma
Torch, Weapon Strength: 174 – 205 +10 Condition Damage, Minor Sigil of Force (+1% Damage), Lvl. 15
Waldo Torch: 175 Karma
Torch, Weapon Strength: 161 – 189, +9 Condition Damage, Lvl. 15
Bandit Emblem: 175 Karma
Accessory: +6 Toughness, Lvl. 15
Bandit Ring: 210 Karma
Ring: +7 Condition Damage, Lvl. 15
Crude Salvage Kit: 28 Karma