Eye for an Eye (Fallout: New Vegas)

 is a quest in Fallout: New Vegas.

Quick walkthrough
After discovering Cottonwood Cove, First Sergeant Astor asks the player to collect some intel on Legion troop movements and raids from Cottonwood Cove and plant a bug in their radio. The Legion raid intel is in a cabinet near the buggable radio; the intel on Legion troop movements is in the desk on the second floor. After succeeding in this, the player gets the option to wipe out all Legion forces from Cottonwood Cove. This provides NCR fame, Legion infamy & 1000 XP. Alternatively, you may also accept bad intel from Aurelius of Phoenix in conversation & disseminate it to Astor for Legion fame & 500 XP.

Detailed walkthrough

 * When you recieve the option to wipe out the Legion fort, Astor calls you crazy but believes you can pull it off. To get the most fame with the NCR, locate the red truck hanging precariously off the cliff over the Legion camp. Your geiger meter will show radiation leaking from the truck when you get close. Go to the back of the truck, and select the door. (not sure if lockpick is required, had 70 at the time. Confirmation needed) The option to open the door becomes available, dropping several radioactive barrels into the camp, effectively killing the Legion the same way they killed the NCR forces at Camp Searchlight. Astor is quite pleased with this outcome.