This is an interesting mashup of game styles. It took a bit to get the hang of it. I didn't use dash much at the start, which made it feel like there wasn't much to do as you bounced all around. Once I started using dash it gave a lot more feel of control, though with the delay it added a need to time when was best. I haven't made it to the boss yet, so can't comment on that. The first time encounter archers was unpleasant. With them being able to hit you at such long range, possibly anywhere on the screen, they feel a bit overpowered, especially for how early you encounter them. Possibly give them a shorter range, at least on the earlier levels. Once I saw what a threat they were, I tried to take them out first. Then the wizards were added, and it was a tough call for which needed to go first.
The contrast could use with some adjusting. The backgrounds feel to dominant and the battle elements can get lost, especially small things like the arrows. Possibly reduce the opacity of the backgrounds so they have a more faded background feel. The font in several places could also use with a bit more contrast/improved readability, especially the tooltips for relics.