Not only does it sounds difficult, it actually is difficult. I know, because I did it 14 years ago. I eventually managed to do it with the use of sin/cos, but using Unity's built-in 3d engine is so much simpler and more reliable.
I'm making a compilation video of all my iterations of my game. In the first fragment you'll see how it used to look like when I did it the hard way.
By the way: take a look at Outrunners, because in that game sprites are scaled like they appear in real life. It looks much more like my game.