Put the Beast Down Put the Beast Down is a in the " " " Dead Money " . Detailed walkthrough . Before the Courier attempts this quest they must turn on the power to the hotel . Head straight ahead to the casino from the lobby . Once inside the casino there will be a security terminal in an alcove on the right and a security standing to the front guarding the stairs to the bar . Use the security terminal to change its patrol route to Casino west , then head up the stairs to the bar . Once up the stairs and facing the bar , in the back left ( southeast ) corner , on the floor next to a couch is a " Programmer ' s Digest " . There is a speaker behind the counter above a refrigerator , so shoot it . Pick up the Casino security passcode from the bar counter next to three Sierra Madre chip s . There is a first aid box beneath the speaker , and a vending machine code for on a shelf near the refrigerator . Enter the door next to the refrigerator . Go straight ahead and up the stairs and find a door to the kitchens , but it is locked . At the end of the corridor is an open door . As it is approached the familiar beeping will be heard . The radio is located in the room next to this one , on top of a tool cabinet on the left side of the room . This room also contains an Auto - Doc . The room with the open door contains a terminal which has information for the challenge that can be used for History ' s Sake and the holodisk . On the wall next to the door is the very easy security terminal , which can be used to change the behavior of the security hologram in the first corridor . If it is set to guard the bar entrance , it will have its back exposed , and the player character can access all of the corridor . Head down the corridor and into the room on the right . Here there is a door to the cashier ' s office , and a terminal that opens the electrical closet and can reprogram the second casino security hologram to guard the cashier window . The hologram emitter for the corridor hologram is in the corridor beyond this room , up on the wall opposite the door . Head back to the bar area , walk around the bar , back to the seating area near the stairs going down to the main floor , and look over the edge to the left . The hologram emitter for the casino security guard patrolling by the stairs is on top of a beam jutting out from the bar . Jump on to the beam to disable the emitter . To find the hologram emitter for the second casino security guard , continue to the end of the beam where the first emitter was found . Turn right and you ' ll just see the emitter on the floor in the doorway ( on right side ) . The electrical closet is right at the back of this bottom floor area , guarded by a hologram whose emitter is right behind where it stands ( if you have problems destroying this emitter , just throw a grenade past the hologram . Sneak past this hologram . Even if it is alerted , it will be disabled when the power is activated . If all else fails , jump down , run around the guard and activate the emitter before he shoots . In the electrical closet , flick the switch on the right hand wall to give power back to the casino . At this point , the player character will receive the quests Last Luxuries and Curtain Call at the Tampico . The Courier can do the three quests in any order , but as Elijah will say at this point , all of the Dead Money companions must be dealt with before moving on to the final quest . Exit the closet . The security holograms will be de - activated , and the casino will be full of hologram dealers . You can now gamble here if you wish , and there is now a cashier who will exchange for Sierra Madre chips and vice versa . Go back to the lobby , and enter the Cantina Madrid . Disable the speaker on the top left wall . The marker points to an emergency maintenance key sitting on a clipboard to the right as you enter , so pick it up . You can hear Dog and God arguing with each other , but you can ' t reach them from here . Head back into the lobby , and from there to the casino . Head upstairs to the bar again , through the door behind the counter , and up the stairs . Use the key to open the door to the Cantina Madrid kitchen . There are three gas valves you must shut off before you can leave this area . If you are spotted by Dog , he will set off the gas , killing you both , unless you initiate conversation with him . If you pass a Speech check of 50 , you can tell Dog to remove his collar . This will kill him , and you will need to get out before yours goes off as well , so you need to turn off the valves first if you plan to use this option . Depending on which personality you have gotten favor with ( indicated by dialogue ) , passing a Speech check at 75 will enable the personality that favors you to " kill " the other personality and take over . Passing a third Speech check at 85 allows you to merge both of them together , for good Karma . Alternately , you can simply kill him in combat . If Dog dies either by battle or by jerking his chain , make sure you loot his body . He has the Maintenance Pass that will allow you to open the sealed doors . Any option completes the quest , but you still need to turn off all three valves before you can leave . As you enter , the first gas valve is on the right hand wall pretty much straight in front of you . Head into the door on your left and the second valve is on the left hand wall with all the shelves . The third is at the back of the room , in between two doors and near Dog ' s walking route , so make sure you aren ' t seen . The second option is to talk to Dog . If you get the chance , sneak up on him and stand up to talk . Note : There is a dramatic change to Dog and God ’ s ending if you merge them together . They will not remember you but will mention having a sense of gratitude toward you . The merged personality will not attack you .