After clicking the green flag a few times, choose a character. Then you will enter the game! There are 3 menu buttons. the chest button allows you to open chests with keys. The button with the letter "I" on it will allow you to check your inventory which lets you equip weapons you got, and check items you got from chests! The last button lets you open the shop, where you can buy extra keys and hearts. The orange play button lets you start the waves of enemies. Finally, you can press space, or click to use your weapon. And you use WASD to move. Have fun!
Good luck!
