What a great little game! I really adore the graphics, the fact that you guys made animations for the player in all 8 directions is impressive for me, in such a tiny canvas too! The main menu is also animated, which really makes the sunset/twilight setting stand out. All of that deserves the highest rating from me.
But like others have mentioned, the controls feel a bit unintuitive at first. It took me a while to figure out how to properly push and pull object. Especially the first metal block inside the house, getting it on the pressure plate was a real challenge in the first 10 minutes of playing, sometimes it just flew around randomly, or spun continuously in place, and one time my character really got stuck between it and the walls. However, the sword on the other hand is really satisfying to use, it can spin in place which deals damage to enemies continuously, and returns to its owner with ease, even when he's really far away. It's basically a sword version of Thor's Mjölnir, very cool!
One last thing I noticed is that you can easily "cheese" the final boss by throwing the sword at it, causing it to spin, and leaving to another scene. The sword will grind it into tomato sauce while it just stays in the previous scene. When the boss eventually follows you to the new scene, it barely has any health left, making it an easy kill for me.
Overall, sweet little game you guys got there, and I have really high hope for it! Astonishing work!