The concept is pretty good. I don't know how I feel about the walk, though. In games like this where you walk super slow, it feels kinda frustrating, and I'd almost prefer the dash to be the only form of movement at that point. I think maybe some balancing around that is in order, one way or the other.
The core mechanic is pretty fun. There were a few occasions where I felt like I got him or didn't hit the enemy when I felt like I should have. Other than that, it's a pretty solid entry.