A really faggoty story awaits you.
I wrote this just off the top of my head while trying to be interesting, yet not edgehog level of edge. I'm sorry, I'm tired.
This game would be a strategic FP RPG with multiple outcomes, a good combat system outside of guns (which don't worry you don't use often), parkour (minimal), and a serious story.
In an effort to spread a bad name for Pokemon (starters especially) so that humanity can drive them out and then feel no regret spreading far into the vast wildness that houses millions on 'mon, an un-named company begins spreading fires and burning people to frame you -the only powerful fire type in the city- and get you evicted from your home.
You don't know who truly IS doing these deeds, but you and your trainer decide to investigate. Using your trainer's one police contact, you gain access to temporary protection, but when the government gets involved, friends are forced to turn on you and your trainer.
4+ hours, this takes. Game-wise, that is.
That's only Act 1. Onward is the real meat of it. Guerrilla tactics, camping in the woods, additional characters, plot twists, meaningful decisions, scripted events (working off a physics engine not just animators), quicktime events, a skill tree, upgraded abilities, etc...
All of it leads up to a breathtaking final short act in which you are tasked with taking down the man/woman responsible for all of this. As you are leaving, (the structure is collapsing for whatever reason) your trainer gets injured. You go to help him, and as you make your way down and out of the building, narrowly avoiding death as slow music plays, you get to the ground floor, the building is nearly rubble, but the hallway you're in still stands. You're making your way to the exit, when a man steps out and pulls a gun. You go for yours, but a shot rings out, and your trainer is bleeding. You gasp. End game.
Cliffhanger, I know. I'm a piece of shit like that.
Wait for the sequel, noglets.