This is one of the most creative and polished games I've played! Personally, I found the tutorial really well made and helpful. It wasn't boring or hard to get through and has fairly clear visuals demonstrating ideas, which complement the text explanation. That's a huge accomplishment!
That said, it felt a bit cryptic to figure out the mechanics. First, I thought I had to click to perform a move which would activate when the circle finished. Then, I thought I had to start and finish a move before the circle expanded completely, starting each move after the circle began expanding and finishing it before it reached the edge. In reality, it seems like I have to hold the mouse button while the circle reaches the edge to queue the next move, which doesn't feel intuitive as a hold click for me.
Random idea: Depending on the direction this goes, I could see the length of the mouse button hold corresponding to the amount of time a move takes to perform, with real-time changes that affect combos and points.
After getting the hang of it, it's fun! The combo finishing move is challenging and rewarding to hit. I do wish there were more combos and things to do, especially relating to movement and momentum.