Batman survives the events of this game. So he'll fight and defeat some of the deadliest assassins on the planet and build a relationship with the police. All in one night.
The cinematic trailer gives us, among other things, an epic one-on-one fight between Batman and Deathstroke.
Batman even managing to hold his own against Deathstroke. Generally, Deathstroke has always managed to come out on top whenever they've fought one-on-one in the comics, often needing assistance. Furthermore, Deathstroke in the comics is an Empowered Badass Normal (heightened strength, speed, and reflexes) with a Healing Factor, and has been active since Vietnam. This game features a rookie Batman; one still fairly young and new at crime-fighting. Deathstroke definitely has the advantage, and whilst Batman does make a few errors during their fight, he manages to prove himself an almost equal match for Deathstroke.
After Deadshot destroys Deathstroke's secondary sword, Deathstroke turns around and gives him a Death Glareright through his sniper scope. Given how far away from the fight Deadshot is shown to be, and that neither Batman nor Deathstroke heard the shots coming, for Deathstroke to be able to pick out his location and subtly threaten him to back off is pretty impressive.
Not only does he not hear the shots coming, from his perspective, his sword just sort of snaps in two. So there was next to no way for him figure out the trajectory of the shots. And yet...
WB Games gets one for doing what Rocksteady didn't: playing as Batman but in Gotham City instead of being confined to a prison facility. As big as Arkham City is, it's only a part of Gotham. This game allows us to really see not only supervillain antics, but what Batman deals with on a nightly basis. And since Batman can return to the Batcave, we can also really get an idea how his operation works.
When entering the GCPD, Batman comes across a room filled with Branden's men. He muses to himself that he should sneak past quietly, since he wouldn't be able to handle that many armed men. Of course, you can always prove him wrong.◊
When Batman rescues Branden from the hostage situation on the Pioneer Bridge, unties him, and tells him how it's impossible to collect the bounty now that Joker's behind bars, Branden still furiously takes a swing at his head, claiming he's "got a score to settle". Batman counters him with a massive punch to the jaw, knocking him cold, and informs the other SWAT officer to keep on the straight and narrow from now on. The guy not only agrees, but is frightened enough to apologize.
Batman:(In possibly the coldest voice to ever come out of him) You swore an oath to uphold the law and protect this city. The next time I see you, I expect you to be upholding that oath. Am I clear?
Officer: Y-yes, sir. Sorry, sir.
Being able to play as the original Red Hood was a shocking and welcome surprise. Made even better by the fact that you're walking through locations related to the Killing Joke.
After defeating T1 Bane, there is a segment of the game where Batman and Gordon fight together against a bunch of Blackgate inmates. Back-to-Back Badasses at its finest!
The penultimate battle with Bane at Blackgate Prison counts. First, in a Scripted Battle, Bane gets his Moment of Awesome by countering Batman, hoisting him above his head, and slightly breaking his back before tossing him and placing his foot on his chest. Then, after the Joker holds Lieutenant Gordon at gunpoint, and Batman gets flashbacks as clues on how to beat Bane, the muscleman says to him "May you find the peace in death that you did not find in life" before lifting his foot to strike him for the kill. That's when Batman gets his Moment of Awesome by grabbing Bane's striking foot in a Heroic Second Wind and says, "I'm not here for peace," before unleashing the unlimited power of the Electrocutioner's Shock Gloves. After completely draining Bane's health, we get to see the Dark Knight unleash that power on the muscleman, temporarily stopping his heart to save both the Joker and Gordon. True Moment of Awesome indeed!
After three games, we finally get to have an actual combat with the true, non-enhanced Joker. Sure, it's extremely unbalanced, but it's so satisfying to finally punish Joker.
Just before that, there's the scene where Batman informs Joker that Bane is still alive. For the chronologically first time in the entire Game Series, Joker is visibly furious and declares that's not funny. Sure, he laughs it off later, but for that one glorious moment Batman managed to make the continually Laughing Mad psychopath lose his temper.
Any players who actually manages to get the I Am The Night achievement. Why? Because it not just requires you to beat the game on the highest difficulty, but to do it with NO CONTINUES.
After avoiding a New Year's Eve explosion in the Royal Hotel by jumping through a window and using the Batclaw to grapple onto a news helicopter, Batman drops onto a balcony full of Mooks and proceeds to beat them up, as per usual. Players, however, will find themselves observing the fight from a different camera than usual, for a brief moment; namely, the actual camera mounted on the news helicopter, broadcasting one of the first in-universe public sightings of the Batman. While slightly disorientating, watching yourself as Batman beat up criminals during an actual news broadcasting, while Vicki Vale narrates how Batman is on his way towards becoming a hero and a household name, is quite the cinematic moment.
The fact that Bruce completed his training under Master Kirigi, where one is expected to be as ruthless as possible to succeed, much less survive, whilst managing to keep his Thou Shalt Not Kill philosophy intact. This is doubly impressive, since his opponents during his training have no such objections to killing him and are actively encouraged to do it; and especially since his devotion to this also impresses Kirigi himself.
As Batman is on his way to the Gotham City Morgue, Alfred tries stopping him from going any further, giving him a What the Hell, Hero?. The badass exchange that results from this is priceless:
Alfred: You're not some hardened vigilante! You're a young man with a trust fund and too much anger; you're in over your head and I don't want this to be your end! Batman: Alfred, who do you see when you look at me? The boy whose shoes you used to tie every morning? The teenager you drove to his first date? While you are here every night, I am out there. The only thing between the innocent and the predatory! Alfred: But you may be in— Batman:[interrupts] No, not 'may be'! I am! When the mugger or the thief stops to think twice: that is fear. That is what I am. That is why they hired assassins. Because I am the reason that criminals breathe easier when the sun rises. So no, Alfred, I am NOT in over my head! Tonight will not be my end. But it will be theirs!
The reveal of Joker taking Black Mask's place. Joker was considered a nobody in Gotham, yet he was able to take over Black Mask's operation, hire eight bounty hunters to kill Batman and arguably shook up the status quo in Gotham more than Batman has. It was truly a great backstory for Batman's arch-nemesis.
One for Black Mask: Even if he was trussed up by Joker and beaten to a pulp, the fact that he still mustered the balls to threaten Joker is impressive, because not too many people can attest to threatening that psycho and living to tell about it.
Mr. Freeze's fairly explosive and powerful entrance into Wayne Manor of all places, as shown in the Cold, Cold Heart DLC trailer. He can be seen walking across the room with no one still alive daring to even stand up.