The final update introduces the Master difficulty, an impossible game mode to tickle the nerves of experts. Along with increasing the defense of the bestiary, it thinks about the player and adds special power-ups to appear as a decent opposition.
To the insane health and attack bars of the Expert mode, this difficulty adds 50% more. It concerns bosses, too. So, surviving in the new world with nothing to cover yourself with is a death sentence. Not to mention that after losing, you will respawn with zero coins in your pockets.