How to unlock C-sides?

[Silverfish003]

I want to know that

[Nibbie]

I think it is just beat all B sides

[Little Bunny Foo Foo]

You need to beat Core B-side. To access this level, however, you need to obtain all of the blue crystal hearts from in the A-sides and all of the red crystal hearts (other than the one from core B-side) from the B-side levels. After this you will unlock the C-sides and the golden strawberries.

[Silverfish003]

Publicado originalmente por The Villain:

You need to beat Core B-side. To access this level, however, you need to obtain all of the blue crystal hearts from in the A-sides and all of the red crystal hearts (other than the one from core B-side) from the B-side levels. After this you will unlock the C-sides and the golden strawberries.

What are golden strawberries?

[aqmlyn]

Publicado originalmente por ppenicka:

Publicado originalmente por The Villain:

You need to beat Core B-side. To access this level, however, you need to obtain all of the blue crystal hearts from in the A-sides and all of the red crystal hearts (other than the one from core B-side) from the B-side levels. After this you will unlock the C-sides and the golden strawberries.

What are golden strawberries?

One appears at the start of each chapter and doesn't collect until the very end, meaning you must complete the entire chapter without dying to collect it. Beating 8B unlocks the ones in A- and B-sides only, beating 8C unlocks the ones in C-sides.

There's also exactly one winged golden berry in the game - it's earned by completing 1A from the start without dashing at all. I believe this one isn't locked behind some other level, but it's the hardest challenge in the game apart from speedrunning (as it requires at least 1 frame-perfect input iirc)