|Name of the file: Namco Museum Battle Collection [PSP] - Author: ANO - [PSP]|
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.
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.