Go to the first level then use your sonar to enter the level map by holding 1. Then press Right, Left, 2, Up, 2, Down, 2, and Up. A new menu should appear giving access to level select, music/sound test and many other helpful features.
Enter the passwords at the password entry screen to go to the level shown.
Effect Password 01 Medusa Bay UOBVV 02 Undercaves WNVKC 03 Ridge Water USDNF 04 Open Ocean KOGME 05 Cold Water WCSYF 06 Open Ocean 2 SOWMG 07 Deep Water OOOAH 08 City of Forever KWGYI 09 Origin Beach YUJOW 10 Dark Water COOSK 11 Deep Water 2 CCSKL 12 City of Forever 2 EEMSS 13 The Tube GGGKO 14 The Machine CWGWP 15 The Vortex Queen IMQSS
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