In this game, Batman uses a grapnel boost. It was featured in the previous Batman: Arkham City, which takes place six years after the events of this game. In the previous installment, Alfred mentions that the grapnel boost is a new prototype gadget that hasn't been used.
During the final battle, Batman throws Joker into a stained glass window, completely smashing it out. However, it's back in one piece when Gordon calls Harvey over the radio.
After the fight with Bane and Batman is back in the bat cave, he listens to his police scanner about a body in the morgue. There's a close-up on his hand as he turns up the volume, he's not wearing his shock gloves. But when it cuts back to a wide shot of him going to pick up his glue grenades, he's wearing the shock gloves again.
During the ending montage, Deathstroke is among the prisoners being lead back to their cells, however earlier when Batman sees Deathstroke, he's still in his cell and remarks that Joker wouldn't let him out.
When you enter the wonder tower - lobby, there is a large glass dome on the roof. But when outside, there is no dome, only a flat roof.
Twice in the game, Batman uses Electrocutioner's shock gloves as makeshift defibrillators to revive characters who are in full cardiac arrest (no pulse). Defibrillation is not used to "jumpstart" a patient with no heartbeat; it is in fact used to forcefully stop then restart a still-beating heart to correct an irregular or failing pulse. Using defibrillation on a flatlining patient would serve no good at all; CPR would be the correct course of action in this case.
As Vicki Vale's helicopter, with Batman clinging to the bottom, hovers over the top balcony of the Royal Hotel, the cameraman remarks that the criminals below have guns. However, when Batman drops down to fight them, none of them actually have guns.
The Penguin's signal system consists of rotating directional antenna dishes. This set up would lead to an intermittent signal if used for voice transmissions; the antennas should instead be omnidirectional.
Candy announces the flooding on the ship as if Deck 1 were the lowest level. In ships, Deck 1 is the uppermost level.
Cars are shown to explode when the Firefly sets them on fire. Gasoline is not explosive.
In the Batcave, the Batman's breath shows as vapour, but Alfred's breath doesn't show at all.
When the Batman obtains evidence at the Lacey Towers crime scene, the gun caliber is stated to be 45mm. 45mm is far greater in caliber than any form of small arms ever made with the exception of grenade launchers; the caliber is more likely to be .45 and not 45mm.
A control panel that the Batman scans to see what killed a man was supposed to have exploded so violently that it cast the man across the hall, through a wall, and to the other side of the room beyond where he fatally hit his head. Despite this, the control panel is not only intact but perfectly functional, with only charring around it to show that the explosion even occurred.
The Batman has to look for an identification in order to bypass a booby-trapped control panel that killed the identification's last owner. The Batman should not need to bypass a booby-trap that has already been set off.
The impact energy of the hit-and-run incident outside the G.C.P.D. is impossibly high.
The Batman can somehow rip grates out of the wall. The bolts that are used probably can hold hundreds of pounds, so it is more likely that he would have some sort of tool to deal with them.
In one of the side missions, the Batman is tasked with destroying some arms caches. In doing so, the Batman simply fires his circuit disruptor at the caches, making the electronics fizzle; it should take a great deal more than this to destroy an arms cache.
While inside the lacey towers- sionis' safe house, there is a door to the balcony opened and wind is coming in(from where black mask entered behind the joker). But outside of the balcony,the door is shut closed and every thing seems fine .
How did Barbara know Batman had a weapons disrupter? She instructs him to use it when disarming Penguin's weapons crates, but she had no way of knowing he had it beforehand.
Edward Nigma somehow knows the name of the Batwing even though it certainly hasn't been told to anyone else.
GCPD thought the Penguin murdered Black Mask in a turf war, however, later Branden makes a deal with Black Mask to get in on the bounty on Batman's head. But how can he do this if he thought Black Mask is dead?
Branden states that any policeman not willing to be in on the scheme to kill the Batman for 50 million dollars can hand in their badge. Since the scheme is illegal, he cannot ask this.
Down the firing range at the police department, there is a gas canister - which should never be found down a firing range under any circumstances whatsoever.
After Batman defeats Deathstroke, he calls Alfred to inform the GCPD that Slade Wilson is tied up and waiting for them, however Batman never actually ties up Deathstroke before he leaves.
The Batman asks Alfred if the towers he uses for automatic navigation are putting out a jamming signal due to storm damage. A jamming signal has to be deliberately created.
In "A Cold Cold Heart DLC", which is set on New Years' Eve, Ricky "Loose Lips" LeBlanc is still wearing his Santa hat.