Complex sentence: In the Bomberman series, they also have enemies in bonus stages is to defeat many enemies as you can to earn items and power-ups, the player won't lose a life if touch the enemy or caught in a bomb blast during the bonus stage.
Split into simpler sentences: In the Bomberman series, they also have enemies in bonus stages with the goal being to defeat as many enemies as you can to earn items and power-ups. In addition, the player won't lose a life from touching the enemy or being caught in a bomb blast during the bonus stage.