The action/adventure genre of video games has to follow a strict set of conventions over the past 10 years or so, with only a few games straying from these guidelines (the Tomb Raider series come straight to mind), these are:
1.Introduction - the game teaches you how to use your character(s)
2. Conflict - your begin to understand the situation your character is in
3.1st Boss Battle - you face a henchman of the boss character or the boss him/herself
4.2nd Boss Battle - you recover from 1st battle with a new power and face the boss again
5.3rd Boss Battle - you face the boss for the final time, save the world and get the girl
Basically this is a generic sequence of events in any platform, action/adventure and RPG game out right now, also this can be altered for major action films in Hollywood.
I so wish they made a God of War film
But seeing as you have your conventions in place, you need a lead character to carry the game, a protagonist to fight the bad guys with style and charisma to engage the audience. They need to be smart and intelligent to come out with snappy catchphrases or dumb enough so we could at there actions and most of all, they never need a reason to fight.
Uncharted 2, the best movie-esque game since Uncharted 1 and Viewtiful Joe (correct Spelling)
I think that the king of the video game protagonists is Dante from the Devil May Cry Series, he ticks all of the boxes above and the game are not half bad either (except for Devil May Cry 2, it was all bad). The DMC series is the tale of Dante, a half human half demon hybrid, who has a job as mercenary of the supernatural, during the 4 games he has starred in has faced (in no particular order), his father's arch enemy, a giant falcon/hawk thing, a spider made out of fire, his evil twin numerous times, his nephew, his girlfriend/associate, fellow bounty hunters and her father, tanks, helicopters and a slime slug, and they are just the bosses. But a unique thing about this series of games is every time you beat a boss, you gain a weapon from them, a murderer and a thief, that's cool.
They would be so helpful in real life.
As the saying goes, "Imitation is the most sincerest form of flattery." and when you have the perfect formula for an action/adventure game people would to copy it, this is the case with Bayonetta (correct spelling) technically, the same person who came up with DMC concept made Bayonetta, so he is copying himself which is just lazy, smart but lazy.
The female Dante in action.
As long a action/adventure hack 'n' slash (correct term) game follows those guidelines then it will be a pretty sound game, but nowadays nobody really wants a sound game, they want a great game, an excellent game, a gripping game, so game producers dare to be different as Devil May Cry 1 did, as Uncharted 1&2 did, as God of War 1 did and don't forget to be funny.