Hold up, WHY THE HELL AM I HERE AGAIN?! (Girl's Frontline Fanfic/Self-Insert)

Chapter 2-1B: Showdown, Except it's like ManVsMachine

Rein's P.O.V

I fucked up real bad, They're probably gonna be interrogating us about how we managed to get the line.... shiit I wanna fucking use a minigun and just funny gun goes brrrrrrr....
Anyways, back to reality. Me, Liz, and M4 are currently doing some Assasin Creed shit on trying to sneak past the dumb patrol #1. We're inside a dark alleyway, since the sun is actually starting to fall to the west, We also watch out for tripwires and stuff that I'd rather not mention, due to knowing how gruesome we're gonna end up if we got caught.

I suddenly hear some footstep, and signaled them to halt and hide,Me hiding behind some dumpster.. No I didn't go dumpster diving, No, dont make jokes about that..... We waited for them to pass, but my gun is ready and positioned into for a quick draw for insurance.

I counted 5 Vespids and 2 turret-looking robot, it seems that this squad are more of firepowered than the last one... The Ringleader must have underestimated M4 earlier.... Tracking every single movement they do that i can perceive, I watched them exit the alleyway, and heading to the store just at the other side of the wall im leaning on.

Rein: sigh "We're good to pass, just watch your step..."

I looked back at them, Lizzie with her eyes glowing, indicating how serious she is, M4, looking abit nervous just from earlier.

I shooked my head, and started to walk again, Rifle trained at my front. She needs to grow more confidence, Especially with what's gonna happen with M16. We continued a few meters before a bullet whizzed pass where my head should be a few milliseconds earlier.

Rein: "Fuck! Go!"

We started to sprint through the alley, this spot is a disadvantage to both the sniper earlier and us. I spotted an open door and went there, the 2 following behind me. As Liz just got pass the door, another bullet impacted at the frame, My mind quickly concluded that the sniper must be at the rooftop 200 meters from the north-east, with a quick-peek, I confirmed where it is exactly. I focused in my hearing if there's incoming, but none... yet. I slung my AR and went to the second floor, noticing there's an window aligned at the east side at the first room to my right, i quickly unslung the Anti-Material Sniper that I'm carrying behind me. I didn't need to be near the window to allign myself, I just need to aim where i needed to.

Safety, off.
Optics, open.
Stance, Crouching, shoulder should be ready to receive the recoil.
Aim down.... Wind is very weak.
Adjusting.
Adjusting...
Target In Sights....
Fire.
PEW!
Bolt pulled, Ejected successfully....
....
....
Target Down. Kill confirmed.

I released my breath, that I didn't know I'm holding, then looked at my left, noticing a mirror besides the door....
And i saw a Demon.

No One's P.O.V, a few seconds earlier

M4 watched the young man named "Ash" Go upstairs, His partner seems to understood what he's about to do and nodded at me, and signals to go upstair with a pointing gesture.

She went upstairs and sees "Ash" Enter the room at the right, she peeked and was quite surprised with what she saw, she thought it was an bug within her framework but she swear she saw a single wing sprout behind him, as he unslungs and aimed a Sniper Rifle at the window. His Amber-Orange eyes seems focused, at first she didn't understand why he's doing it, until He fired a single shot, breaking the window. He released a breath and looked at her direction, but his gaze is at the mirror.

He immediately draws his rifle with a single hand and placed a 3 burst, breaking it, his face morphed into a fear and started to hyperventilate.

Lizzie downstairs, guarding the only door to the inside, heard the 3 bangs and immediately bolted upstairs, and noticed M4 standing there with a shocked face at the doorframe, she shoved her to the side with some force, and runs inside. His brother is hyperventilating again, she needed to help him. She needs to.