Nice game!
I really got some Zelda vibe from this game. Nice game design, it is intuitively clear where to go next and how the game works. The stylization of 90s games is a success - it evokes nostalgia. Variety of mobs and bosses also is a bonus point for your game. Combat and puzzles are nice, hope you'll extend them into more difficult ways. I really hope that you will make a full version of this game.
A bit of suggestions: I didn't understood the RMB attack - looks like it has the same damage as regular attack but slower. Also controls are a bit unusual - I forgot when I last used an Alt button in games and sometimes I forgot to enable/disable abilities. Soundtrack is a bit repetitive but that's not a big problem or me.
Thank you for a nice game!
P.S. This should be a meme template: