Cosmic Epsilon/Secrets

Continue
Wait until the Game Over message appears on screen, then hold and press. At the title screen, press again to start at the beginning of the stage where you died.

Level select
At the title screen, press. A "Stage Select" message should appear under the Asmik logo allowing you to pick a level.

"Another World" mode
At the title screen, press. A "Another World!" message should appear under the Asmik logo and allow you to play the game with a different color palette.

Konami code
At the title screen, enter the Konami code. A "I am not Konani"[sic] message should appear under the Asmik logo.