In order to allcess all the levels press:
Right, right, down, up, left, up, up, right, left, up, right, right, left, up , down.
left, left, left, left, down, right, right, left, left, down, right, down, left, up, right and all secrets are yours.
On the very first level, on the very first scene, there are two islands floating in mid-air with a bumblebee floating round them. On the second one (the one furthest away from you), stamp on it three times, and a new level will come apparent, with 5 hearts to be gained.