Sure! Here's a simple implementation of the game you described using HTML and JavaScript:
In this implementation, the JavaScript code is enclosed within `
` tags. The `pickWeapon`, `openChest`, `startGame`, `npcAttack`, and `playerAttack` functions are created to handle the different actions in the game.
To play the game, you can simply open the HTML file in a browser on your smartphone and interact with the game by tapping on the weapon icons to pick your weapon and the chest icon to open a chest. The game will display the tutorial messages and log the actions in the console for demonstration purposes.
Please note that this is a basic implementation and doesn't include any graphical or interactive elements. It's a text-based representation of the game flow. If you want to enhance the game with graphics and interactivity, you would need to utilize additional HTML, CSS, and JavaScript code.