Sure, here's a simple example of a game where you play as Jason Voorhees and your objective is to eliminate AI characters who have their own objectives to complete. The game will be implemented in a single HTML file and will use JavaScript. Note that this is a very basic implementation and just serves as a starting point for further development.
In this game, you control Jason Voorhees represented by a red square, and AI characters are represented by blue squares. Each AI character has its own objective to complete, which you can implement as desired. The game updates every 20ms, and collision detection is in place to handle interactions between the player and AI characters. Note that the AI logic and elimination logic need to be implemented separately based on your specific game requirements.