Complete these tasks to unlock a certain secret level, listed as Scroll number 5.

Mini game - Task

Barrel Blockade mini game - Get 40 coins in every level from "Cat and Mouse" (scroll number 2)
Duck and Cover mini game - Get 40 coins in every level from "Job Hunt" (scroll number 1)
Ogre Slayer mini game - Get 40 coins in every level from "The Showdown" (scroll number 3)