Secret location?

[MyElixir]

Can anyone tell me what this achievement "Finder of secrets" is all about?! :)

[schreckdaddy]

Each area/level has a secret location. In order to unlock it, you have to beat the dungeon in that area in under 2 minutes. Areas that have 2 dungeons, the secret location is unlocked from one dungeon or the other.

[MyElixir]

Thanks! :)