To play Hero City, you simply need to use the arrow keys to control your hero's movement. As you navigate through the city, your primary goal is to avoid obstacles and engage enemies effectively. The spacebar allows you to shoot, letting you take down foes in your path. The key to success lies in your ability to master both movement and shooting. You must move swiftly and position yourself strategically, aiming carefully to hit the most dangerous enemies first. Clearing each level requires precision, and as you advance, the enemies become increasingly difficult. The game progressively ramps up in difficulty, making each victory feel more satisfying. You'll need to stay focused and practice to become the ultimate hero of the city.