Ass Pull: the Life Note, each special ability of the Royal Death Note, Naomi's true identity... Dark's magic cellphone is both a metaphorical and literal asspull.
Although the Life Note is fairly common in Death Note fanfiction and appeared in the manga pilot in the form of a Life Eraser.
The Everything Note enables Dark to become king of the world, destroy all "nuclears," and go back in time.
"HE HAS A DARN EVERYTHING NOTE! THAT TIT IS TAKING THE PISS NOW!"
A Teleport Note enables Hal Linder (who is inexplicably male in this version) to teleport into Dark's house.
A Ghost Note enables L to come back as a ghost.
But I thought ghosts don't "exits"?
The Pain Note in the spinoff series lets Raye put anyone in pain. The Sick Note appears to do the same thing too. Neither one actually advances the plot once the author has exacted his insane "revenge" on canon characters. Both are just lying on the floor when needed. Ditto Near's Blind Note.
The Talk To Dead Dudes Note and the even more utterly unhinged Talk To Not Dead Dudes Note which mysteriously just float up from the bottom of the sea.
The Anti-Life Note is then Asspulled out to Retcon the previous Asspulls. Except it apparently doesn't work.
In what must be the one of the oddest Asspulls ever, Creepy Dude gets a Secret Death Note, which can't be detected by "Death Note radars"... from a volcano God.
Canon Defilement: most of it. L randomly getting a Life Note is particularly bad, though.
The author admits that he changed Naomi from being Japanese to being British because it would make the story cooler.
Cargo Ship: "She locked at near. 'You just thinked about making a laddie out of lego and sexing it.'"
Complete Monster: It's harder to list the characters in this fic who aren't complete monsters than those who are. Barely a single character does anything nice or for the gain of other people, and their sociopathy reaches incredible levels at times (Blud wanting to destroy the world just because he's a god of death or something springs to mind...).
Crazy Awesome: Blud's description in chapter 13, just read it: "Standing over him snarling and dropping bits of blood and slobber was a fierce dude with twenty feet tall. His blood mowhawk was blooder than ever and there were dead peeps stuck to the spikes screaming in pain. His tooths had been sharpened so they were all sharp and bumpy like a saw and strong enough to chomp bone or concrete or even diamond but he didnt eat them cos they were pricy. He was wearing a coat of armer made of lava with guns and swords and cannons stuck to it. He was driving a motorbike and it was powered by nuclears which made it faster." Don't forget the seventeen crossbows, stuck together with blood and "duck tape" either!
Every last page, word, punctuation mark, and space in this story positively exudes this trope. Never before has this much insane awesomeness been seen in one location.
Les Yay: Sayu/Misa, Takada/"Desk Lady", Naomi/Night.
Mary Sue: Dark Yagami: Somewhere between Villain Sue and Jerk Sue; and Night Yagami, whose skin is made out of death notes and who has Shinigami eyes and ears. She's also prophesied to "sign" the song that ends the world.
And in Darks room was”¦”¦ DARK! DARK YAGAMI! DARK FRIGGING YAGAMI YOU GUYS!
The Woobie: Ruyk. "Why can't I eat a blood banana?" Practically everything he says could end ";_;"
Villain Decay: Light starts out acting as Kira, but quickly takes a backseat to Dark, who also later inexplicably stops being villainous.
Voodoo Shark: This fic is so convoluted, it actually manages to Voodoo Shark a Voodoo Shark. Night magically reappears after Dying For Real. How did she come back to life? She was accidentally life-noted back by Higuchi Yotsuba when trying to revive his dog Might Yagami. Why does he have a dog called Might Yagami? Because Light Yagami accidentally got cloned and came back as a dog called "Might" in the future. Right...
What an Idiot!: After successfully sniping Light dead in the park, L found a Life Note and "accidently writ Light in it."
"THIS DUDE CKIRA IS ACTUALY A KIRA! HE HAS A DEATH NOTE AND SOMEONE TOLD ME A CAR EXPLODED AND HE WAS THERE DANCING WITH A DEATH NOTE"