Arkham Shadows had a good reason for ending the way it did.

Major story spoilers ahead.
Batman: Arkham Shadow
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Batman's Arkhamverse is littered with boss fights against the Dark Knight's nefarious villains. Batman: Arkham AsylumThe Titan's minions mutate and Ben himself will frame the other arch-enemy. In the franchise has followed Batman: Arkham CityMr. Freeze combines dynamic attacks and all the brains at the player's disposal. Batman: Arkham Origins will be doubled cityRa's al Ghul's epic confrontation to test his cinematic parrying skills with Deathstroke; and Batman: Arkham Knight It will eventually let players join hands with the Riddler after completing 243 puzzles in the Pinkney Orphanage.

Batman: Arkham Shadow It's a much more linear and cohesive experience than it is. Arkham The game evolved immediately after that. AsylumBut that works very much in its favor, e.g. shadow Take a slower, more emotional approach to Arkhamverse storytelling. Batman: Arkham Shadow Featuring three boss fights. Two of them use new equipment that players received in advance. and the other allows players to rely only on their fists. And unlike other entries in the series, it doesn't end with a boss fight, instead, what? shadow Success is the culmination of the story being told.

Batman: Arkham Shadow lacks a main antagonist in the traditional sense.

If District Attorney Harvey Dent/the Rat King/Two-Face It's less of a character. Perhaps it's easy to understand what a boss fight the character would be like? Sure, Two-Face later on in the Arkhamverse has no problem letting the coin decide the fate of others and wielding a pair of pistols, where Batman doesn't. I was afraid to violently subdue him.

however, Batman: Arkham Shadow A chronicle that sheds more light on the tragedy and tragedy of Harvey. It is revealed that he and Bruce The Waynes grew up together and became family. So while shadow There's almost certainly a boss fight for Harvey, as Camouflaj's Ryan Payton told Game Rant in an interview. The concept is never as murky as when players fight bosses in the franchise: “We discussed, prototyped, and had a lot of replayability. Regarding what might be thought of as Harvey Dent's boss fight, there's no one in the traditional 'Batman bashing Harvey Dent' – his adoptive brother. People he cared about and loved,” Payton continued.

Obviously, we don't fight the boss Harvey Dent at the end of the game for two reasons. One reason is from a scope perspective—we committed as much time and resources as we could with the amount of time and resources we had to this project. And two, because when you zoom out to the story and look at Batman as a character, Where in the beginning?
Batman: Arkham Shadow
And where do you see his end? I'm really proud where the player confronts the villain at the end. And Batman doesn't pull any punches.”

The ending of Batman: Arkham Shadow is in the middle of developing Bruce Wayne's character.

This might be due to the lack of boss fights. Batman: Arkham ShadowThe emotional reverberation ended. And seeing Harvey struggle with his shocking prophecy when Two-Face was born. Hit harder than any other punch. that Batman would slam at him But for Bruce Wayne who won't embrace Harvey No less than Joe Chill being angry or vengeful is a key point for the protagonist and shows how much he learns throughout the game. As Peyton said,

“He showed empathy. And I think he's shown that he's willing to understand someone with whom he might disagree or with whom he's very angry.

That applies not only to Harvey Dent, but also to the man who killed his parents, Joe Chill, standing in front of him. And I think that's really important to how we communicate that. To make that matter take precedence There's a traditional boss. Come fight me at the end of the game.”