Boss tip:

Its not a cheat its a hint for the 2 essence level. When you are at the boss get on one of the square things and drop a bomb in the head of the red face, do this 4-5 times and youll beat him, but be careful if you drop a bomb in the other faces

Hints:

($ = spade sign)
Tell this to tingle after finishing the game - J$d
Tell this to one of the fairies in the forest - J$gQ