Gameplay: press A and D to move left and right, press Shift key to sprint, press space bar to bounce; press K key to make a flick counter, and the enemy will consume 1 drop of blood in a successful counterattack; hold the K key for 2 seconds and release it to use a heavy rebound, and the enemy will consume 2 drops of blood in a successful rebound; when the energy bar reaches 6 bars, press the L key to release an automatic rebound for a period of time. Press Enter at the end of each level at the red dot in the center of screen to move on to the next level.
