Beat Arcade Mode With The Shotgun
To Unlock Mighty Joe Jupiter Trilogy:
Beat All The Mighty Levels In Cadet Training
To Unlock The Music Jukebox:
Finish All The Episodes Of Mighty Joe Jupiter Trilogy To Unlock The Music Jukebox In The Optioins Menu.
To Unlock New Guns:
Beat The Game In Arcade Mode With The Weapons Shown Below:
Beat With Pistol: Get Machine Gun
Beat With Machine Gun: Get Cane Gun
Beat With Cane gun: Get Shotgun