Remove the tutorial level.
Remove right-corner-ceiling.png from the forest.
Remove the spring of the forest.
Remove the right-corner.png file from the forest.
Adjust some sprites in the waterfall.
Remove the wall-corner sprite sheet.
Remove the old ground-ceiling sprite sheet of the forest.
Remove the references to Ray from the forest 1
Split the sprites of the right branch in two parts (branch and leaves). Ditto for the middle branch.