I hope this kind of question will qualify for the purpose of this website. What is the purpose of alternate levels in BIT.TRIP. Runner 2 ? By alternate levels I mean those levels that stray from the "main path" on the world map and you have to "pay" some gold to play them.
It seems to me that the quantity of gold demanded is not so big and you can easily play them normally, also they are not more difficult (like the vault ones) or special in any other way.
EDIT: It looks to me that I was not so clear on my question. I was not talking about the alternate exits, I was talking about the levels on the WORLD MAP that are "locked" and you have to pay gold to get to play them.