Handily one of the best games of the jam. I love your choice of ergonomic keyboard controls. I would guess you're the sort of person who prefers to use vim as a text editor.
It plays like A Link to the Past and appears to draw quite a lot of inspiration from it. The enemies are similar, but you get to try a few different strategies for fighting them. I like that I could do both melee and ranged. Both were fun and easy to control.
I also like the idea of having to go back through the level and escape with the artifact. It reminds me of Dungeon of the Endless.
The only thing stopping me from giving this all fives across the board is my desire for a totally new kind of gameplay.