This was a really, really unique submission for a boss rush game. I don't think you see many tactics games in this sort of jam! I love the sprite-work and the concept as well. I see a lot of potential in this one but have a few issues with the controls and UI.
I felt that it was really tedious to press the arrow instead of the unit itself and I had to physically stop myself from clicking the unit each time I wanted to control them. I also think it would have been nice to somehow see the action timers on the units themselves instead of the corner of the screen. This just makes it easier to focus on the board. I also often found myself getting into situations where I would be busy chasing the boss with three units which was hard to manage at times. This is especially difficult when the boss would be running perpendicular to the direction of a unit, so I would have to spend a turn spinning the unit around (sometimes multiple units). I think the majority of my issues with this is due to the fact that this is a real-time tactics game, so board information should be as easy to gather as possible since the state of the game can change any second. So the more time I have to fiddle with the controls and UI, the less time I have to plan out my next move.
Or maybe I just suck hahaha. That's just my first impression and hopefully my feedback was helpful in any way!