Hmm this one is tough , SO let me get this right? The guy jumps off a tower and has a fall motion like bullet? and you're controlling the hitter now with different force variables in play, So hmm i'm not sure if you could just reverse the direction? or cause a bounce effect for starters? like when player swings spawn Invisible box, The bungee guy hits this box and booms away? then perhaps have different size boxes ready to spawn, Depending on the force this would decide which size box is spawned, lets number then 1 2 3 4 etc so when box 1 is visible set bullet speed 100, when box 2 is visible set speed 200 etc? And throw in the gravity to make the guy stop eventually?