Let's start with the start! Very cool to include the tutorial and "text heavy warning" :) That being said- I don't think your game is too text heavy. Especially for a Rpg Maker game, people really tend to put a lot of text in those!
The main puzzle was cool. All the elements made sense together, so the game didn't feel like a '90s point and click adventure. Usage of all the items was clear too.
It would be cool if the game was a bit longer- like if you had to make a potion, that enables another piece of the puzzle, that in turn allows us to open the door.
Use of the theme was good, because it affected the plot and the gameplay. Btw- the story would fit nicely in a bigger game!
Over all- cool to see another game from you! Keep up the good work!