After you started the game with "Start Game" button, you can overcome entry demo by clicking "Skip". Navigate Batman with arrow keys and jump him with space key. If you hold the space key in the sky batman will fly and you can ride. Use "S" key to fist, "D" key to hit, "A" key to batarang. Batman's batarangs are limited and you can throw more batarangs if you pick them during the game. Let's start the war againist the enemies with batman now!