I'm wondering how any of you made it past the third level. I read here that you're supposed to go into the boss fight with at least 8000 RPM, but I probably gave it about half an hour and at least 50 attempts and was still only able to come in with 7200 RPM at most. But even then, I feel like it wouldn't have been a problem if you had more control over your blade. The blade fights felt really unfair because it seemed like any input I made with my cursor weren't responsive enough, and any dashing movements would constantly overshoot. This was especially apparent for the Titan Blade, which had a tiny arena that was very easy to fall out of and a huge profile that was hard to maneuver past. It also did so much damage that if you so much as touched it (which was very easy to do given the above), you would lose hundreds of RPM instantly, pretty much guaranteeing you a game over with the slightest mistake.
I really wanted to finish the game, but I couldn't. Am I missing something?