Certain stations in OS could have complex interiors you can traverse, much like in Crimson Haze stage 2/3.
You would encounter various enemies, both mobile and static, as well as static destructible objects that contain loot or powerups.
At the end of these, you could have mobile or static bosses that fire projectile patterns or use various special abilities or mechanics, with a reward and an exit portal on success.
My inspiration mostly comes from some old space fighter games I played, like Fury³, and Descent (1995)
