Use the following trick to kill the president in Enclave without alert the guards. Before you go to Enclave, make sure you have at least 20 Super Stimpacks. If you get close to him, he will speak to you. Tell him that you must leave. Get very close to him and use at least eight Super Stimpacks (ten to twelve recommended). Active the Pip Boy and wait ten minutes. After that, he will be dead without alerting anyone.
Tell whomever asks you that you are a recruit. Go down the "elevator". In one of the rooms is a doctor and an out of order mechanical dog. Talk to the doctor. After he tells you some useful information, shoot him (the room is sound isolated). Find the missing part for the dog upstairs in the top left corner (an engine or battery of some kind). Put the part in the dog and he will then be yours.
Talk to the mechanical dog's owner (a doctor of some kind). He will give you a hypodermic needle full of poison. He wants you to inject it into a mutant. After doing so, talk to him again and you will get the dog.
The doctor tells you to prove the antidote for the mutants. After you prove the first one on any mutant, go back and he will give you the dog. Talk to him again. He will give you another antidote. This is a good way to kill all the mutants in Broken Hills.
In the basement of the New Reno Arms, at the far right of the screen is a pot covered by a mattress. Only the very edge of the pot is exposed. You will notice it when the hand icon appears when you hover over it. Inside the pot is an Easter Egg.
When you enter New Reno Arms during the day, notice that he will not let you enter the back. On the side of the building is a door that you can enter from the outside. Pick the lock and enter during the day (so the shopkeeper will be at the front of the store instead of in his room). Make your way to the right. There should be a room with two dogs which will not attack, a bed, and shelves. Behind the shelf you cannot search is a stairway. Go down and you will enter a room with a man in a yellow shirt and brown pants. He will say "Boom!" when you talk to him. Give him an upgradable weapon. He will require one hour of game time to upgrade your weapon. If you give him an empty weapon to upgrade, he will give you the upgraded version and it will have full ammunition.
Go to New Reno Arms and kill the shopkeeper. Your karma will not change but you can steal his guns. He has a minigun, sniper rifle, and more.
Access the PipBoy and stay at that screen to eventuallysee the old Fallout screensaver on the PipBoy screen.