A solid game I like the style, and exploration to find the artifacts, and the movement felt pretty good for me at least. The game could benefit from some music and I had a couple of problems but I say these constructively and not to be harsh:
1) The sword doesn't work for me. I am not sure if this is a range issue or not but I entered the boss hitbox completely to try it and it still didn't work for me. Bow worked great though.
2) When I bought health from the shop, I became completely invincible.
This is a solid game entry with just a little bit of bug-fixing needed. I liked the comedic exit from the shop :)