Professor Howard's blimp appears periodically during stages, allowing you to spend blue gems dropped by enemies:
Your plane has a relatively large hitbox, so precision movement is essential. Many hazards are environmental, not just enemy fire. Shop & Upgrades Horgihugh And Friends [010085301797E000][v0][US...
Use the B button to fire your main shot. As you collect power-up medals from Professor Howard, you will automatically fire additional systems like lasers, bombs, and missiles using the same button. and missiles using the same button.