Thank you for the feedback! And congrats on performing so well in the jam!
Indeed, the font and resolution that were chosen don't work together at all. The font is large and blurry, and fixing one only makes the other worse. One solution is just to use a more suitable font, though it would ideally be serif because of the medieval gothic theme. An alternative is having two resolutions, one for the UI and one for the gameplay, like Celeste does.
There are two things I would change about the attack animation, I would make it a lot faster and also add an arc of light. The running animation seemed OK to me, though it should not play while jumping.