Really a fun little game, great job!
The visuals are incredibly cute and on point for an isometric “Zelda-like” adventure game, and the music is a pleasing background for it all. The controls, while a little strange to pick up if using a keyboard, are functional and reactive: I particularly liked the iconography for each action, it really is intuitive and eliminates the need for a tutorial; on this regard, your use of universally recognized videogame tropes like levers that need to be switched is really admirable, since they immediately explain the simple puzzle mechanics without the need for someone telling you what you should be doing.
Gameplay-wise the game feels good to play: the combat is fun and the puzzles, though really easy, are too. The only thing I’ll say is that having slimes immediately hit you on touch is a bit unfair when the attack range of the character is so short: maybe you could give them a short animation for an attack that allows the player to hit them and run away more easily.
Again, a really nice entry: good job and I would like to see more in the future! :)