Same way you do any other floating object I would assume... Save and quit or build up a platform except you have to take the picture in theatre, during the very first round of Forge. I think that this way the objects will all appear in their positions (the principle that causes objects that aren't set to spawn at start to appear during that very first round of Forge) This is not a definitive answer by any means, I have never tried it, but it's worth a shot. Feel free to correct me if I'm wrong
it most likely was done by floating two double boxes, and then placing all the weapons on top of them. Then when he was done, he probably just deleted the double boxes, and it makes them float for the round, or until someone touches it.
It will fall upon any interaction with ANYTHING. Someone's pinky toe brushing the nozzle, a frag grenade some effin 30 yeards away, etc
you place them all, then delete the double box, they will remain in the air, but dont end the round. dont touch/get near/shoot/explode things near the weapons or they will fall, and spawn and continue to fall. my best guess
Yeah. Just place weapons on top of a floating immovable object, save the game, and delete the object the weapons are sitting on. The weapons will fall if touched by another moving object though (not counting monitors or players). Just don't save after you delete the immovable objects. Otherwise the weapons will fall in all games afterwards. Look at "A Tribute to Predator5791" in my sig. This uses the method.
hey thats mine =) Its pretty easy= the only thing thats hard is to make them look verticle ( if you didnt get what i was implieing { and yes i know i cant spell} The weapons arent vertical, i just built them on a ramp and deleted the ramp, pretty easy, but you can also use this cool thing called a search bar on bungie.net)