Avt0r/Zona2D ? reverse-engineered prompt

Build me a simple 2D survival shooter in Unity called Zona2D, where the player moves around a pixel art wasteland and tries to stay alive as long as possible. I want keyboard movement with running, shooting with the mouse, reloading, switching weapons with the mouse wheel, and pause with Esc. The game should have enemies with basic behavior, health and experience pickups, ammo drops, melee and ranged weapons, a visible user interface, sound effects, particle effects, and a small progression loop that keeps things feeling arcade like.

Please make the map generate endlessly so the player can keep exploring instead of reaching a hard edge. Keep the art style clean and simple, like a retro 2D shooter, and make sure everything is playable and feels responsive. If you need to check current Unity docs for the best way to set up anything, go ahead and look it up online first.