Hello,
From your description it seems that what you need is a steampunk styled Unity scene and possibly somewhat modified assets for shields and "music projectiles" to fit that theme (if possible to implement). To deliver those items we'd have to:
- discuss graphic style and graphic fidelity level expected (current style is quite abstract, but for steampunk maybe something more orthodox would be necessary),
- I'd create sketches for the scene for your consideration, clearly it will be a form of a stage with backside only for immersion and most focus on the front area,
- after idea is chosen, I'd make rough 3d version for it,
- after some testing within your system and tweaking the basic 3d design it would be approved,
- whole scene would get a layer of polish, with texture work and details (you are using red and blue for interactive elements, which leaves yellow, orange, green, bronze to give the scene a bit more color needed for "lush", ornate steampunk look).
Kind regards,
Piotr Lugowski