This game is pretty cool! You control a ship with 8-directional shooting and the ability to lock a direction and move freely. You collect very different weapons that you can swap between using the Start button, including homing missiles, forward/backward shot, and mines. You then battle your way trough a very varied set of stages, some underground, some in an open overworld, and various boss battles with different mechanics.
Screenshots marked with 🍒 are created by syltefar and are considered public domain, free to use for anything. If you want to, you can note where you found it and link to this page.