You go into one of the small bunkers where they have been researching machines and on the desk you find a computer floppy disk, which you take. Miles later on another part of the island, you come across a container with one Dog left inside. You insert the disk and the Runner comes alive, but his pipes are blue rather than red and he is now on your side.
He follows you wherever you go and shoots at anything that shoots at you. If you go somewhere he can’t follow, he waits at the door until you come out - even a bunker. Come out of a different door and he sets off after you. Fast travel and he cannot do that, but sets out across country after you until he catches up. You can see him at any time on the map (like you can a visiting player). Also you can send him away by clicking on the map and as well as “Place Marker” it says, “Place marker for Dog”. As soon as you click it, he sets off. He does not engage machines until they engage you. They don’t turn on him, it’s just a bonus, although he can get hit by bullets aimed at you, or by missiles that land near him, so in a heavy engagement you have a choice between having his support or sending him away to a marker point to keep him safe - your call.
He attracts no attention from machines ('cos he’s a machine) and bimbles along beside you, but turns and “points” to any machines he detects. He has only one life and when he’s gone, he’s gone.
For single players it would be the coolest thing in the world. I am willing to beg…