How to get ghost:complete ghost medal and defeat ghost mini-boss or mix 2 sleeps together
Get to secret place:get all the pieces of the map
ice/fire/spark sword:get sword scroll and mix fire/ice or spark to get that element sword
wheel secret:go on ice/fire/spark type ground to get flaming/ice/spark wheel while you're a wheel
killed monsters into bubble items(does not work on mini/bosses including the sqeaks) be bubble
Hope this helps^^