I love to see updates to stuff like this! The new level decoration, lives, and the 1-up stages are all absolutely awesome additions. It makes the game feel much more alive.
The Book of Pedro is also very cool! I'd love to see it added to the game from the main menu or something as a sort of bestiary, but that's a wish for another time.
Ultimately Pedro Jam is a very solid arcade fighter! The enemies are unique and interesting and the art is awesome. Stick with it! I'd love to see more of this in the future!