I've been trying to unlock Len's Concept Skin but after hitting 50 plays with Len, it hasn't appeared in the store. Any ideas as to why?
It needs to be 50 clears, not plays. Just clear however many songs you need left while playing as him.
Yes. Not just Len, but others too. It's faster that way. Knife is the only trio song, not counting Decorator since only 1 module can be selected.