To get better upgrades (Galaga Arrangement) let your ship get stolen, then let another steal your ship. Kill one, get the power-up, then kill the other bug. You will then get an ultra upgrade. Try using different bugs.
Pac-Man: High Score Attack mode
Reach Round 3 and view the first cinematic.
Unlockable
Beat the game to unlock the following for use in Free Play mode. It allows you to select a ship upgrade before playing.
Unlockable - How to Unlock
Ship Selection Option - Successfully complete the game.