A very enjoyable little adventure! The dialogue system worked well and I was able to play all the way through to enjoy the whole story. Good job!
I did notice that continuing is fairly buggy though -- I had to restart the game twice after dying to the second boss and getting a blank grey screen when continuing. I also died to the third boss and that time it let me continue from the same spot but the boss was completely glitched out and harmless. I took that as a win after the first two tries and just back stabbed him until he quit. XD
The mechanics were cool. I definitely got what you were going for with the spear returning to the player and the bosses having weak spots on their back when they always face you. The little puzzle with the switch across the water was also neat, though I tried to solve it early once I realized that I could flip switches with my spear by throwing it.
Overall a really nice entry. I always appreciate seeing these more adventure style games even though it's a big scope to tackle for a jam!