Track down Pretty Boy Lloyd, recover the stolen money, and make an... example of him

 is a quest in Fallout 2, given by Louis Salvatore. He wants you to track down a man who owes him money, retrieve the money, and kill him.

Lloyd is hiding out in the basement of the Desperado. He'll try to talk his way out of trouble, but if he escapes you're in trouble with Salvatore. Make Lloyd take you to Golgotha. The first grave he takes you do is trapped, so make him dig to find a bundle of plastic explosives. The second grave reveals a manhole - make Lloyd climb down and drop the explosives after him. Climb down to collect $1000 from the footlocker, and you can loot a bit more money and a Shotgun from Lloyd's corpse. You can also climb down after Lloyd and kill him yourself, though this results in karma loss. You can also avoid the whole trip, kill Lloyd and pay Salvatore yourself, though you're now out $1000.

To avoid karma loss, an alternative method may work: follow Lloyd down, exit combat and sneak up on Lloyd, then use steal on him and plant dynamite/plastic explosives on him (two of either may be required, or weaken him with gunshots before sneaking). Be sure to sneak away to safety. Lloyd should blow up without any loss of karma on your part. Salvatore will still reward you for this.

Disposing of him will net you 500 experience points.

Return to Mr. Salvatore and give him the money. He'll pay you $500 and you'll gain 500 exp for completing the quest. Assuming you were courteous, he gives you a second quest: Collect tribute from Renesco.