I believe you'd still be controlling the player character, you'd just be seeing through the eyes of the enemy

I don't know how well it would work as a game mechanic, but I could see a cool take on this in a cyberpunk setting where the player character is blind, but can hack into other people's eyes to see, so you go around seeing yourself from different viewpoints

I imagine it would get weird

You shoot someone and suddenly you can't see through their eyes any more since they're dead. Or maybe their bionics are still powered for a while but they're not facing any useful direction, maybe they fall face down and all you can see is the floor tile they're laying on, or they're facing up and all you can see is the ceiling until you walk right over their corpse

Maybe after you kill a room full of enemies you need to lug around a corpse or maybe just a severed head so that you can find the exit because none of them fell looking the right direction.

I'm not normally much of a writer, but that idea actually inspired me a bit, so here's a little short story I guess

I walk into the lobby and I begin to see through the eyes of the security guard seated at the desk. He's reading a newspaper - an actual ink-on-paper newspaper. I didn't know they still made those.

The door chime beeps and his eyes are immediately on me, zooming in, trying to get a read on me. I see my own features, distorted by the fisheye lens of his implants.

These security types always have some high-end bionics- night vision, thermal imaging, zoom, image stabilization, extra-wide field of view, facial recognition, the works. They think they can see everything but somehow they never seem to see it coming.

A notification pops up in his vision "Unrecognized person detected, check ID" the angle changes as he begins to get up. I see the back of his hand as he raises his arm in a "stop" gesture. He's wearing a wedding band. That's unfortunate.

I see movement in the bottom corner of his vision. He's doing something with his other hand but I can't tell what. Is he reaching for his gun? Is he smoothing out the wrinkles from his shirt? Is he just trying to put the newspaper away?

Maybe that's why he reads an actual newspaper. He's supposed to be alert and paying attention, if he read on his phone or tablet like anyone else his employers could track it, they'd know he was slacking off. Smart.

Through my own ears I hear him ask for my ID.

Through his eyes I see myself reach into my coat pocket he zooms in slightly. I love it when they zoom, it makes what comes next so much easier.

I see my gun come out. The angle changes abruptly but strangely smoothly, that image stabilization is doing some heavy-lifting as he tries to duck for cover and reach for his own gun.

His eyes are fixed on it, he's staring right down the barrel, I can even just about line the sights up through his eyes, he's making it too easy.

A flash. A loud bang heard through my own ears. Flashing warnings at the corners of his vision reporting critical vital signs.

The angle changes again, I think he's fallen backwards and is propped up by his chair. He's not looking straight up at the ceiling, but he's not looking straight forward at me either. I can catch glimpses of the top of my head here and there as I stumble blindly towards him.

My face comes into full view as I make my way around the desk. I start going through his pockets looking for a key card to let myself into the elevator.

I find a rectangular piece of plastic on a lanyard stuffed into his pocket, and hold it in front of his eyes to confirm that it's what I was looking for. I tap it on the sensor on the desk and hear the elevator doors slide open.

I point his head towards the elevator so that I can see where I'm going. A message notification pops up in his vision from "Bae💜" asking if he'll be home for dinner. I see myself sigh as the door closes behind me.

The steel and concrete of the building sever me from his ocular feed as the elevator starts climbing and everything goes black once again.