As an AI text-based model, I can provide you with a simple example of an HTML-based JavaScript game that resembles an FPS game like Valorant. However, please note that building a fully functional and visually appealing FPS game like Valorant is a complex task and cannot be achieved solely with a single HTML file. A complete game development process involves extensive coding, asset creation, game physics, animation, and more.
Here's an example of a basic HTML file containing a JavaScript FPS game:
Please keep in mind that this example provides only a basic structure to get started. Implementing a fully playable FPS game with features like shooting, character movement, and enemy AI requires additional logic, game assets, and extensive code development.
To develop a more complex game, it is recommended to use game engines or frameworks specifically designed for game development, such as Unity or Unreal Engine, instead of relying solely on HTML and JavaScript.