The First 15 Minutes of Fast Striker (Dreamcast)

Copied from MobyGames:

Fast Striker is an arcade-style vertical shooter with a science fiction setting. While the game is essentially 2D, the backgrounds consists of pre-rendered 3D graphics. This game features six stages with over 40 enemy types.

You can choose between 3 game modes with different scoring systems. The modes differ, for example, in the set of available techniques. In comparison to the Novice mode, the Original mode features a shield to protect the ship, which can be activated for a short time, and holding the down the spread fire button will also shoot rockets after a few moments. Furthermore, the enemies are colored differently in Novice mode to make them more visible, and you collect golden stars as part of the scoring system. The Maniac mode adds some new ways to get higher scores. For example, the distance between your ship and an enemy influences the score. Destroying many enemies in short time will also increase the number of awarded points. Last, you can activate a "Grind Mode" by focusing your ship's laser beam on a huge enemy. The beam will turn green after a while and then all destroyed enemies will give a higher score.