Love the sound effects! At first, I got quite frustrated at the flail being quite inconsistent, but after I got used to it, the rest of the game progressed quite smoothly. I think there are cases that, when the flail is moving fast enough, it goes over the enemy's hitbox and misses them? It makes you feel cheated when you're hurling a flail at Mach 2 directly over the enemy and you don't hit them.
Other than the flail's quirkiness, the gameplay is nice, and the art and audio is great.