1.Gem Ring
2.Electro-blaster and bouncers
3.none
4.all,if the spring is frozen,that is
5.makes it fall down.duh
6.she can't grab helicopters and has no super-jump(except some complicated running-button thing,but who can actually use that?XD)
7.jjnowall,which makes you go through walls if you are in a flying mode
8.laser and bubbles
9.1*1,the explosion 3*3
10.electro blaster,pepper-spray and,thinking logically,freezer
11.inflict damage
12.every gun,if you hit a lot of powerups
13.it turns to ashes and falls apart
14.it looks like a shoe.it makes a sound when you pick it up.but it never got a real sense because JJ2 ish a rushed game.
15.battlea.j2l

Okay,that's my answers!