How to do you do the cannon ball move

Answer from: spidey 111
You have to buy it from the spidey store

Answer from: helperouter
You must first buy the move called the "slingshot jump" (or close to that). then turn the easy swing off in the options (if not already done). start swinging by pressing r2, and while you swing press r2 again and hold until you have two webs (don't let go of r2). charge a jump (hold x) and pull back (move the left analog stick down until spiderman is facing you, then press it up) until you stop moving backwards. that is when you let it out by leting go of the jump button (x). you'll fly forward until you splat into something, or make another webline. (note: this upgrade works best when infront of spiderman is clear. (no buildings)