Looks like nobody posted a video of their best times in the tutorial levels. Hopefully the video I posted should get me on the leaderboards, and help give you a better idea of the issues with this game.
I'm able to hit the shuriken to stop time but then... where did the shuriken go? I eventually was able to chase after the shuriken to hit it a second time, but I certainly couldn't aim it precisely enough to do that AND beat enemies in multiple different directions...
The concept of stopping a countdown with your shuriken was very creative, though!