As You Know: An odd variation. At first original dialogue was directly transcribed, but further on the author just writes his own by paraphrasing the events of the game. The narrator also tries to avoid slipping up and revealing something he shouldn't know. For example, Morrigan suspects that he knows about the Dark Ritual because he asks if she'd "be willing to die for something really important."
The fact that the narrator's mind apparently follows Inception rules in the Fade is certainly not going to be forgotten, complete with a good-counterpart for the Mal figure. Maybe.
During their first training session, the narrator works out that the biggest flaw in Elisa's style is that forcing her onto the defensive is the easiest way to beat her. Come chapter 10, the narrator uses this in his fight with Zevran.
The narrator is forming Social Links with the party. This is a HUGE unfired gun.
Christmas Episode: Which included the start of the narrator's involvement with Morrigan.
Cloud Cuckoo Lander: Understated, but visible. For example, in Redcliffe he jumps at the chance to kick down Dwyn's door 300-style. It doesn't work. On the whole his mental train derails when he's agitated or scared, such as during the defense of Redcliffe village where he debates whether to call the attackers zombies or undead.
Colossus Climb: Zevran gets to perform one of these on Flemeth in her dragon form.
Combat Pragmatist: The narrator doesn't have much sword skill, so he makes up for it with this.
Conveniently Unverifiable Cover Story: The narrator tells the Warden that he was a commoner who ran away from home to join the army at Ostagar, then survived the battle and came to find her. Subverted, as the narrator is actually the City Elf PC, who actually was at Ostagar but lost his memory. Maybe.
Dual Wielding: The Warden's combat style. The drawbacks of the style are addressed, however, and Elisa is shown to be constantly honing the style. The only time she dual-wielded two full-size swords was to curb stomp the Broodmother.
Dudley Do-Right Stops to Help: The narrator pulls this to save Bodhan Feddic and his son from darkspawn outside Lothering. Thankfully the party saves him before he's overwhelmed.
For Want of a Nail: The narrator's presence does change a few things, such as another Chasind Grey Warden by the name of Malcolm surviving Ostagar, but a multitude of other things happen that seemingly have nothing to do with him. The Warden having a much more affecting personality, for starters. More importantly, the narrator was apparently an abomination the whole time. Then again, the narrator is the City Elf PC, so that complicates things.
From a Certain Point of View: The narrator never actually lied to the party. He's just talking about memories of his past life in the Alienage that he lost.
Heroic BSOD: The narrator goes through one in the Fade at the Circle Tower where he admits he knew it was a dream the whole time, but wanted to stay because it's two years ago and his parents aren't divorced. It takes Elisa's Patrick Stewart Speech to get him out of it.
Elisa goes through a couple herself - first a minor one when her family sword breaks, the second when she and Alistair get a Relationship Upgrade, but finds herself agreeing with Wynne's sentiments.
The narrator has another one when he loses control to the demon, running away from the party. He needs a Cool Down Hug from Wynne to get better.
I Am Not Left-Handed: Pulled off by Zevran and Elisa during the Princess Bride re-enactment, though anyone that saw the scene could guess the spoiler.
I Warned You: Malcolm pulls this on the narrator when he betrays him.
Katanas Are Just Better: The narrator's signature weapon is the Green Blade, a katana-like elf sword. Though he gets a regular bastard sword later, regulating the Green Blade to a backup monster-killer.
A Man Is Not a Virgin: The narrator is, and he and Alistair reference this shared quality. When he does lose his virginity to Morrigan, he finds it isn't all it was cracked up to be.
A Mind Is a Terrible Thing to Read: The narrator experiences Elisa's memories of Howe's attack and it nearly kills him. Subverted with Malcolm, as his memories give the narrator the strength to fight off the demon.
Mind Screw: The fic seems to be taking the Life On Mars bent. Is he in a coma dream? Is he simply a resident of Ferelden gone mad? Or has he really been transported to another world? Evidence for all three of these is starting to pile up. Not to mention his Fade dream, which goes all Inception-y.
The narrator quotes Jolee in one conversation with Morrigan.
During the defence of Redcliffe the narrator mentions the amount of zombie kills it took to get a particular achievement in Dead Rising, then comments that in Dead Rising he wouldn't have anyone in MY STOOOOOOOOOOORE!
When Elisa breaks her sword at the mage's tower, she uses two short swords afterwards. This is referenced as going Highlander: The Source.
After Zevran's ambush is defeated, Elisa offers a fair duel in exchange for a chance at living. Their dialogue and actions will seem fairly familiar to many people.
One to the game of The Witcher in chapter 12, with 'I hear Grey Wardens can parry an arrow in flight'. It almost has the same outcome too.
"I'm a Witcher," I growled in a Batman-esque voice. "Once I give you twenty Dire Bear asses I wish to sex up your village's entire female population. Then I want dirty playing cards of them. No, don't ask why."
Foreshadowed, but in chapter 12 the Persona 3 reference comes right out. There are at least three party members the narrator has started a Social Link with.
Wham Episode: Both Redcliffe and the Circle tower, though the latter moreso because not only does it throw the narrator's reliability into question it reveals that he's been an abomination the whole time.