Full Metal Pony

They had walked for hours when Applejack finally had the brilliant idea. "Hay, Twilight, why can you make one 'o them fancy portal things and whip us on over to Celestia?" She said with her southern drawl on almost every word, Twilight though for a minute, unsure about the idea for some reason. "Applejack, using magic takes energy from me. If I’m tired when I cast a spell, chances are the spell will either backfire or just fail. Judging by th-" she was interrupted by Rainbow Dash, who saw her opportunity. "Well, Twilight, if you need rest to cast the spell, then we should all take a nice, long break and let you get your rest." she said, patting her head with the last few words. Not five seconds later she was gone, undoubtedly going off to find a comfortable looking cloud for one of her naps. "I guess I’ll take guard duty for a bit." said Shimmering Leaf, and he went off to a nearby tree and settled down under it for the shade, keeping a watchful eye around the camp. They all had drifted off, when they flew overhead. Dash was the first to hear it, and rightfully so, as she was abruptly woken up but an earth-shattering clap of thunder. She jumped up, half frazzled and half groggy from just waking up, when there was another. Her ears felt like there was an alarm clock going off in her head. She looked around, when it hit her. This was the same sound that was made then the changelings flew overhead. She peered over the cloud, and sure enough, the swarm of them flew under her. Dash spotted an opening and darted through it to get word to the girls, who were already wide awake. "Twilight, da-*BLOOM*-eed that spe-*BLOOM*- ou can cast it!" shouted Rarity, looking up to the sky every few seconds. Twilight understood, and her horn started to glow with a purple tint, an exact copy of her coat, and a beam of energy shot from the tip. It seemed to impact an invisible wall, and spread into a doorway directly to Celestia's castle, and they all stepped through, through into the blaze.
An hour ago it was their legs that burned. Now it was their eyes. There was a lot of smoke, but all of them could see that they were in a circle of fire, and unable to see anything outside of it. Rarity saw Twilight beginning to tire out from the teleported spell and stepped in. Her horn had a light blue tint to it, and the fire seemed to break apart, an archway through the wall if fire for them to escape from. Every pony took the hint and ducked through it, and turned around to see Rarity walk out of the arch just as the floor in the circle caved in, leaving a gaping hole where they were just standing. Turning around, they were apprehended by a squad of changelings. Fluttershy just lay on the ground, quivering. Then, one of the changelings turned around and slashed the unsuspecting changeling behind its throat, sending waves of blood and gobbets of flesh everywhere. By time the others realized what was going on, the mane 6 leaped into their attack, Twilight casting fireballs at them. There were screams from the changelings, and the sound of sizzling flesh as the fell to the ground, literally cooking to death. Applejack bucked any changeling foolish enough to get in close to her. Each buck sent a head off in a rapid flash of blood, the heads rolled lopsidedly to a stop. Pinkie couldn’t really use her modified party cannon, but she had a couple surprises up her sleeve. As soon as the first changeling was in punching range, she pulled out a party popper, and yanked the string. Only the popper was ALSO modified, and sent a blast of needles into the changeling’s body, rupturing intestines and lacerating lungs. All but one was down, and pinkie had something extra-special for him. She grabbed a noisemaker, and whirled it with her mouth. Without warning, she let it go, and it flew directly into the changeling’s head, brains slowly dripping out from the crack like a broken egg. Dash flew overhead, using her Crossbow on her shoulder to take out changelings from the safety of the air. Every bolt she fired, on impact with a changeling, chattered the bone around the bolt, and left a bit-sized hole, entry and exit. Rarity unsheathed jewel blade and lunged for the nearest changeling she saw. The blade cut his flesh on contact, blood gushed from the wound, and guts fell out from the gaping wound in his stomach. He fell face-first into a pool of his blood as Rarity watched. Out of the cornet of her eye, she saw something. Rearing up to attack, she saw it was Angel, slowly walking towards another group, mac in mouth. They charged, and so did he. All Rarity saw was the flash of steel, and the glint of blood going in every direction. In the end, there was just a pile of mangled bodies, torn and shred in every way. "Well, girls. I must say, well fought." said Twilight, exhaling a long-held breath.
They hadn't walked five steps when a large, dark figure landed directly in front of them, casting a shadow over all of them. Twilight slowly looked up and was relieved to see Luna standing there. "Princess Luna, we're trying to find Celestia, wh-" she was interrupted by an explosion through the wall to the right of them. Luna acted fast, and spread her wings to cover them from raining stone and glass. "Well, now, what have we here? Seems that big sis left you with babysitting, hmm, Luna?" said Queen Chrysalis, mocking the sight before her. "Chrysalis!" Yelled Luna, and stepped forwards. "Now, now, dear, it isn't you that I want." She said, looking past Luna and dead at Twilight. With a flash of green, she was gone from Twilight's view. "And it's you I shall receive..." said a voice from behind the mane 6. They all spun around, just as Chrysalis was rearing to attack Twilight. "STOP!" screeched a voice from the pack of friends, and a white unicorn brushed past Twilight. "Twilight is my dearest friend, and Celestia-damn you if you think you're just going to walk in here and get her." Rarity said in a commanding, royal voice. The others had caught on, and flanked her at each side. "Three... Two... One... ATTACK!" yelled Twilight, releasing a beam of pure energy upon Chrysalis. She backed a few steps away, but as soon as the beam dissipated, she saw Rarity charging towards her, sword drawn high. Then every pony saw what was happening, as if it was in slow motion. Rarity swung her head back, ready for an attack, when Chrysalis brought her head down low, and it happened. Rarity's body jerked forward and stopped almost instantly. Her sword fell from her gaping mouth as she let out a blood-curdling cry. Chrysalis lowered her head just enough to impale Rarity on her horn as she charged straight towards her. Now she raised her head, sending a rush of blood, and Rarity herself sliding down the horn. She stopped face-to-fade with Chrysalis. "Now, then. Where were we?" Chrysalis asked, and let Rarity slide down the serrated horn and land in front of the other 5.
All Rarity could see in her dying moments were the faces of her friends, old and new, crowded around her. "Fluttershy, can't you fix this?" Asked Applejack, but Rarity managed to speak for the final time. "No... girls. If t-t-this is wh-what Celestia wills m-m-my fate to be, then so b-be it..." she spoke, softly and slowly, the words growing fainter as she spoke. "Twilight... Tell m-my Spikey-Wikey th-that I... I... I love him." she whispered to Twilight, and she passed away, surrounded by the ponies who had cared for her and gotten her through whatever she encountered.

And she was happy.