Life On Rails.

No matter the ranged weapon, the same general principle applies: Generate a bunch of **** and, with that ****, launch a projectile hard and fast in one go.

This is as true for an **** rifle as it is for bow and arrow, as it is for tossing a fistful of dung.

Then we have the Rail Gun.
Using electromagnetic forces to propel the armature along rails, the Rail Gun sets itself apart by how the projectile keeps accelerating as long as it's on its rails.

Imagine if the bullets in your gun fires off when you pull the trigger. And fires off again halfway through the barrel, going twice as fast. And also fires off every centimeter along the barrel. As well as every millimeter.
And micrometer.
And nanometer.
When it comes to the Rail Gun, there's not one instance when the armature's not faster than any moment before.
The limitations of traditional firearms soon turn into a somber memory.

A red spot from the Swiss Army Rifle's laser aim appeared on Bat Girl's jacket. It locked onto her core, then drifted slightly to the left, aiming at her heart.
Her eyes traced the pointer as it wandered across her frame. She didn't flinch though. Just remained standing confidently before me, hand resting on hips, bat slung over shoulder. She flashed me a bold smile.

The Rail Gun had a muzzle velocity of 18 kilometers per second. No way could she dodge away from that. Nor had she any such intentions, apparently.
Grabbing the bat firmly with both hands, she planted her feet far apart as she turned her hips, slinging the heavy club over her shoulder and behind her back. Her eyes glowed with focus as her smile grew into a delirious grin.
Guess that was all that's left for her to do. She was no nimble speedster in her world, nor a tank who could take anything anyone could dish out.
She was a fighter through and through. Nothing was left for her except to try striking it out.

I admire her can-do spirit. That'll get her far.
But this was as far as she was gonna go.

That cannon takes two weeks to charge up a single shot. I had it charged up way before the Tournament began. Yeah, that means Drunk Allison didn't create it. That was all me, baby! Had to work it all out my own sober self. She merely incorporated it into the Swiss Army Rifle. So whenever I shoot it, I've gotta make it count.

It never even occurred to me to test her out on a single person. Estelle Bright was fighting her hardest against me though. The least I could do was to show her where my aspirations had led me.

There we stood, bracing ourselves to test our resolves against one another.
The air fell still as a serene calm settled over the arena.
Just for that moment.

My finger hooked around the trigger, and squeezed.

White light engulfed my vision. The deafening boom shook the ground and rattled my organs. The muzzle expelled a cloud of hellfire, almost like a bright beam; paling into dark smoke the very moment it appeared. I danced backwards as the gun spun out of control in my hands, the immutable forces I unleashed tugging me into the whirlwind of sand kicked up by the shockwave. My Flubber Armor was left at my feet in slimey shreds.
No longer did I feel my innards constrained by my body. Every cell in me revolted against the notion of remaining intact. Whether I was splattered on the ground or not was beyond me at that point.
I felt queasy.
I felt disoriented.
I felt pain.

I let out a blood-curdling scream at the top of my lungs:
"....................................................................................................!!!!!"
I only ever heard the ringing in my ear though.

The moment I pulled the trigger, our lovely little Bat Girl swung her Girly Bat with full **** in an effort to hit a homerun.
Let's quickly go over why that's not gonna work.

There's more ways to mess up your day than what I know what to do with. I could light you on fire. Push you into rapids of water. Drop a 16 ton weight on you. Or trick you into touching some electrical wiring. All of these, and much more.
No example does exactly the same thing as any other, yet they're all exquisit options for messing up your day. Because the capacity to do so comes down to the same general principle: Energy.
Of course, how you use the energy matters, but you can't make buildings without bricks, and you can't make bricks without clay. The more energy; the higher the number joules; the worse your day's gonna be messed up.

Which brings us to how we can know how much energy we've got. As it happens, there's a convenient way of figuring out the kinetic energy of a moving object:

1/2 mv²

m is how heavy something is, and v is how fast something goes. To use this formula, all you gotta do is take how fast something goes in meters per second, multiply that by itself, and multiply the result with its mass in kilos! Your kinetic energy will be half of that number.
This applies to anything. Whether as light as wet tissue paper, or as heavy as a cannonball. Notice how what matters most in this formula is not gonna be weight, but speed. In other words, it's more by convention than anything else that we think of getting hit by wet tissue paper as no big deal, and getting hit by a cannonball as a world of hurt. Getting hit by a piece of tissue paper can hurt just as much as a cannonball... If tossed fast enough.

My Rail Gun can toss fast enough.
The armatures of this baby contain no explosives. They don't need to! She imparts no less than 2.7 billion joules of kinetic energy.
It packs just about the same punch as ten thousand handgrenades!
Swatting cannonballs away like mosquitoes may not be a big deal in this world, but my Rail Gunis nothing like any old-fashioned cannon!
It's more akin to getting hit by a speeding passenger yet.

Estelle Bright may be one hell of a Bat Girl.
But this ain't a job for any Bat Girl.
She was gonna go down.

A fireball erupted where the bat connected with the armature. A trail of smoke whirred past my ear. I peered over my shoulder to trace the trajectory upwards, finding the top of the barrier detonating in yet another fiery explosion. Smoldering debris rained down across the arena.
As the inferno lighting up the arena dimmed, a screen of smoke was left drifting away from the spot where Estelle Bright once stood.

And she was still standing!
All I could do was gawk at my opponent as she stood tall before me in defiance of science and common sense!
She held on to the shattered remnants of her bat, spots of ember glowing along the charred wood of the split fibers hanging off the handle. Not so much as a scratch on her body.

The smoking carcass of my Swiss Army Rifle slipped out of my trembling grip, sinking into the sand at my feet.
...Well, damn! Guess that's what I get for assuming, huh?

There I stood without armor or weapon against an opponent who matched me when I was equipped with both!
You think I've got some last trick up my sleeve? Something that'd make my last performance blush?
Well, clearly you weren't paying attention! I was in a bikini! Not really known for their sleeves, are they? My cannon was well and truly done for at that point. You know how the Rail Gun uses rails? Not gunpowder? So guess why the barrel was smoking if it wasn't gunpowder smoke!
It was gun.
Evaporated gun.
It didn't rise like your everyday gunpowder smoke, but moved along the shell's trajectory. The friction had boiled the innards of my gun, spewing out what was left of it as smoke.
So yeah, the Swiss Army Rifle was out of commission.

See, when you shoot out things at that speed, things kinda stop making sense. The bright flash when I fired? That was plasma from ionized ionized air! That deafening blast? That was a sonic boom! Maybe you're starting to see why I was so spooked when she managed to deflect my attack!

I was more than surprised though. I was dismayed. Kind of intrigued, honestly, but mostly I was devastated.
Part of me actually wanted to surrender at that point. That probably doesn't make any sense hearing it like that. Not when so much was at stake. But you gotta understand... That was more than just a really good gun I picked up from somewhere! It was something I made! Something I prepared! It started out as nothing more than an idea in my brain about how to build a Rail Gun at home. I tried it out, found out what happened and made notes of what problems appeared. Then I looked into why those problems happened and how to fix them. I was never convinced that I could actually make it work. I mean, you never really know what you're capable of doing before you've done it. But I kept it trying through sheer grit and enthusiasm. When I finally found myself with a fully operational Rail Gun I was totally out of myself! The fruit of my labor was before me! Confirmation that I could outsmart reality into making an exceptional slingshot in my backyard!
It was my blood, sweat and tears!
Yet a girl with a bat could just flick it away like it was nothing.
What was left for me to do when my best hadn't been enough?

But you know what?
To hell with that!
I wasn't gonna become anyone's ****! I was gonna make my last stand!
Who's to say that Estelle Bright didn't earn her abilities through the same efforts and sacrifice I did? Pushing her physical limits. Perfecting her technique.
Someone was gonna get disappointed!
No... If I was gonna finish that business, I was gonna finish it right!

Pulling my earplugs out, I presented her my open palms at about waist level, standing with legs far apart.
Win or lose. That no longer mattered! What mattered was ending it on my terms!
The very least I could do was give Estelle Bright a fight to remember! Just like in Butch Cassidy and the Sundance Kid! Throughout the movie, the two outlaws did nothing unless it was thoroughly awesome! But near the end, they became trapped by the Bolivian lawmen who were pursuing them. As they prepared for their final moment, one hero readied his gun and calmly said "for a moment I thought we were in trouble." The movie ends when they charge in gunslinging into a hopeless situation, right before they had the chance of sucking for the first time on screen.
In reality you don't cut out the sucky moments though. You just gotta make sure whatever happens next is as badass as it can possibly be!

You know what? That's exactly what I was gonna do next! I'd hit her with the line from that movie! Then get my pretty ass handed to me!
I smirked at her, stepping forward boldly, "For a moment I thought... "
"I surrender." Estelle Bright dropped her broken bat into the sand.
"Gvbluk?"
Hey! What else was I supposed to say? If you think you know what to say in that situation then be my guest! But personally I doubt anyone could actually prepare themselves for what to say in that situation.

“Estelle has surrendered. The winner is Allison!”

"Uh..." I looked around confused. The pain and fatigue that worn down my body lifted so quickly I immediately wondered how I possibly could've messed myself up that much.
Whatever happened clearly bewildered the crowd as much as it did me. The wrong girl had won. No one knew how to feel about that. But dumbfounded bewilderment seemed appropriate enough. They gawked at Estelle and I. The glasses of the ones wearing them were cracked from the Rail Gun blast.
Someone clapped their hands. Soon they were joined by another. And yet another. In short order the arena exploded in roarous applause and cheers

"Congratulations, Allison! You just won your very first ****!"

"Hold up..."
I didn't get so much as another word in before the Arena's magic unceremoniously plopped the both of us out of there.