More points are given for killing enemies. Therefore, it has become easier to get additional lives. But it has become much more difficult to play, since the difficulty of the game depends on the number of your points. Therefore, at the earlier stages of the game, you can find difficult opponents.
ROM / ISO Information:
Database match: Xevious - The Avenger (USA)
Database: No-Intro: Nintendo Entertainment System (v. 20210216-231042)