Sure, here's an example of a simple shooter game implemented as a single HTML file. Since I cannot directly generate pictograms, I will describe the game mechanics and display within the code. Please note that this game is for illustration purposes only and may not have the desired level of realism or detailed graphics you are looking for.
In this simple example, the game sets up a canvas element on which it renders the player character, enemy character, and their respective gun names. The player character is represented as a blue rectangle, and the enemy character is represented as a black rectangle.
You can further expand on this example by implementing movement controls, shooting mechanics, enemy AI, and adding more realistic graphics if desired.