I think the idea is great, but the flail should be "lighter" and easier to keep it in spinning motion. Maybe adding a dashing/running ability would make it feel better? I just ended up using only RMB to spin it and then running away until the cooldown refreshes. A visual or audio-cue representation of the flail cooldown would also be nice. Talking about the visuals and audio - the sprites are very well put together and they fit together quite nicely, even if they're all public assets. I'm not a big fan of that hitting sound, it annoyed me after a while. Still, a very cool idea with some minor issues that would make it even more enjoyable if fixed! Congrats.