Use a pipe as a hammer to embed a rusty nail into a board for a basic weapon. It might even give your enemies tetstar fish.
You grab a plank and a pipe and hammer the nail through with the pipe. It seems to have made a basic weapon. You nail one through in the opposite direction so that you can get them in a reverse swing, too.
Charles comes quickly but quietly down the stairs and walks briskly over to you with a worried look on his face. "Shhhhh! Keep it down!" Charles whispers nervously. "Tom spotted some people in the bushes 200 yards away, probably 4 of them. His gun only has 2 shots left, and we can't afford to let ourselves be known now. We don't even know if they have guns, or if they've spotted us."
With that, Charles leaves as quickly as he came.
Perhaps implement nails into wire to serve as a conductor? (I mean, a nail connecting both of the exposed ends of the wire)
Grab rusty pipe and use it to break boards off fridge.
You look at your weapon and then at the wall, and then back at the nails. Your curiosity overcomes you.
You drag a nearby rubber mat under your place of operation, and wrap a wire around one side of the nail, and then begin to wrap the wire around the nail when lights star blaring and sirens go off–
*BRRR BRRR BRRR BRRR*stuff. Now you've done it.
Charles and Tom come rushing down the stairs, Tom carrying his AR-14.
Charles: "Damnit Mike!"
Tom: "They're headed this way– 4 of them, and they have guns!
Charles stacks a few crates in front of the entrance from which they came and turns around after blocking most of the entrance.
Everyone grabs what they can. You grab your tarps, pocket your knife, and your new weapon. Charles grabs a crate of bread, and Tom grabs some boards under his arm, all wrapped up into a tarp.
By the time you reach the back exit, you hear shouting from the other door, and shadows through gaps of the stacked crates. As you turn around to close the door, you see a muzzle flash and the concrete next to you receives a dent. Bits of rubble scrape your cheek, and you manage to close the door and get on the ground before a few bullets fly through the door.
Charles and Tom are now ahead of you. Tom opens the back door slightly, and peeks out, slowly inching out of the exit.
Tom: (Whispering) " All clear!"
He swings the door wide and you all escape into the woods behind the warehouse.