
I don't think this superweapon should have to be used out in the open, though, b/c (1) i hate the Painter for having that limitation and (2) unlike light, sound travels through walls (and ceilings and floors..). So probably the best way to deliver the MESSAGE (lol) is to drop a device (kinda like a mine) that produces the sound-blast.
I also like your (Pepito's) ideas for a proxy mine parashoot drop
and the adrenaline combo that produces an ultrasonic field..
another nice one would be a proxy para drop , or a storm of arrows...
how about a powerup/adren combo that causes the player to generate an ulrasonic field that tears apart evrything that passes close enough...tag , you're it...