Level 2.

As you and Harley make your way into the heart of Gotham, all of a sudden your knees go weak and you feel another rush of adrenaline career through your being.

"HOLY FUCKING SHIT!" you cry at the top of your voice, lights seemingly exploding before your eyes "WHAT A RUSH!"

Collapsing to your knees as the sensation finally dies you can hear Harley laughing.

"HAHAHAHA! That never gets old does it, sweetie? So, tell me, how do you feel?"

"I feel" you reply glancing up at her, eyes wide and feeling more alive than you ever have before "Fucking amazing!"

You pick yourself up and puff out your chest.

"Go ahead" you challenge Harley "Hit me as hard as you can, I feel indestructible"

"Woah, cool your jets hot-shot" Harley warns with a smile "I doubt that Vicki Vale's got the Super Powers to match her super tits. What you've got there, in my professional opinion, is just a boost in your intelligence"

You look at her with a quizzical expression "What do you mean, just a boost to my intelligence?"

"Hmmm" Harley tilts her head slightly "Didn't I explain that part to you? Sorry, my mind tends to wander. O.k, this is how it works. For every Hero and Villain you defeat you don't only get a weapon, that's if they use one, but you also get a boost to your abilities. With me you got a boost to your strength and speed, thanks in part to the lov-er-ly Miss Pamela Ivy who gave me one of her wacky plant concoctions when I was feelin' blue about Mistah J one time, we'd had a major falling out, mainly due to him trying to kill me the crazy lutz...that reminds me, we really should drop in on Ivy at some point...but as Miss Vale doesn't have anything like that and is, instead, a top notch news hound, I'm guessing you got a boost to that brain. You see sweetie, the more you beat the better you get, makes sense, don't it?"

"Yeah" you say, more confused than when you started this conversation "Makes about as much sense as you"

Harley pokes her tongue out at you before spinning around and staring up and down the street.

"Well then, let's see...which way should we go" she says scratching her head "Hey Dick-a-nator...nope, don't like that either...why don't we try out your new cranium. What do you think?
"
"I think" you say glancing east at a young girl you see entering an apartment block "We should go that way"
Harley looks at the girl then back to you.

"Jeez, she's cute but can't you think with your other head for once. What's the use in following her"

"Oh, I don't know" you smile "Maybe because she was floating about a foot off the ground when she went through the door"