Kill Killian

 is a side quest in the original Fallout.

Walkthrough
There are two ways this quest can be started:

1. While doing the Get Gizmo's confession quest, you have the option to record Gizmo hiring you to kill Killian Darkwater for him. Gizmo will ask you to return with the dog tags he wears around his neck as proof of his death. If you do it yourself, you'll anger all the guards of Junktown, and they will attack you on sight thereafter. Return to Gizmo with the dog tags in your inventory to receive your reward.

2. You also get the reward for this quest if it's Kenji who successfully assassinates Killian. You can help Kenji without getting involved in the fight yourself, e.g. by stealing Killian's weapon and stimpaks just before Kenji initiates combat or by standing in the door so that the guards standing outside won't be able to enter.

However it is accomplished, retrieve the dog tags from Killian's corpse and return them to Gizmo for a reward.

Reward
500 bottle caps, 600 Experience points, -5 Karma

Убить Киллиана