Question - How to unlock Level select and Debug mode

[GM72]

How do i unlock Level select and Debug mode ? What do I need to do ?

[Leonard]

I have a detailed description of that and other stuff here
https://steamcommunity.com/sharedfiles/filedetails/?id=180379198

[Sovereign Scourge]

Unlocked by completing all the special stages in the Time Attack mode in less than 5:00'00 (5min).
Select any Stage you want at any time(also with Past,Present and Future).

[Sovereign Scourge]

Unlocked by completing all the special stages in the Time Attack mode in less than 4:00'00 (4min).

The classic Sound Test Menu like in Sonic games before. Whats special about this one is that you can look at some hidden pictures by inputting certain combinations. I will come to that later.

[Sovereign Scourge]

To activate the debug mode you need to enter PCM:12 DA:11 at the Sound Test menu. After that simply start a level.

To turn into and item you have to press X, to change the item press Y/Z and to place an item press C.
This only works properly on keyboard or keyboard emulation since you can't change the selected item with a controller.

[4M3R1C4N MUSCLES]

The information you have about Debug Mode not working properly with a controller is incorrect. You can cycle through the selected item with a controller as well.

Once you've turned into a "Ring" in Debug Mode, you would just need to hold the "Y" button, and then press either the "X" or the "B" button to cycle through the items on an XBox-layout controller.

It's not the intuitive single-button mapping like it is on the keyboard, but the features is there for the controller.