Help with 2D game

I thought I submitted this thread already but I can’t find it, even from my profile.

Hi, I’ve been wondering if it’s possible (due to the nature of orthographic cameras) to build a single large spiral map that still has depth in a 2D game. Either the map rotates as the center also moves towards the camera, or the player can gradually move inwards in a spiral while the camera maintains perpendicularity to the player.

The reason being, is I want a big boss visible at all times, when that stage/map comes, and I want you to see it from all sides as you walk around the spiral gradually getting closer and closer to it. I want it to look like a side scroller, but the background and possible even foreground to be parts of the map you just passed or are currently heading to. It also allows you to go back if you forgot something, or if something is destroyed, because the big boss shoots a laser that intersects rings of the spiral, and a pile of rubble that wasn’t there before allows you to climb up and give you a new item.

Made a short video to help explain. So far I’ve been unable to get it to work with an orthographic camera, and still maintain that the boss is in the distance. Used Softimage since I knew how to parent and constrain better in that than in Unreal.

I don’t want it to be in a 3D isometric view either because then you see the spiral and loose the 2D effect of objects moving in the background and foreground.

i think you need to put your camera in perspective for that.
you could use a “special camera with perspective” for this scene only.

or,
you can fake the bg by scrolling it while your character is running.
Make 2 planes. One for the character, and the second planes for the background.
one part for your character and obstacle (the normal game), and a fake one behind that is scrolling to the right or left (depending if your character is advancing or not)
because of the orthographic, try to had blur to the background to fake the distance and scale down your prop in the bg too.