Really enjoyed playing this one! Levels were engaging and never felt unfair or too difficult, everything could be mastered with enough time.
The only thing that could be better was the dialogue box. I think it would be a better idea to place it at the top of the screen where nothing is happening instead of having it at the bottom successfully rendering the floor invisible. Also, maybe try to avoid using too much dialogue to explain simple things that the player could figure on their own and feel even better for learning something themselves, like " doors need a key to open" or "pulling a lever may do something".
But dialogue aside, it's a really solid platformer with nice visuals.
Keep up the good work!