Pretty sweet, solid fundamentals, had a good time playing through and beat the last gate.
The core stuff is good but I feel like this one needed a bit more juice, hitting stuff and comboing off felt good but could have been even better with some nicer VFX etc.
Another thing was the movement felt a bit basic, it seems to be just moving directly forward along the mouses aim vector, this is nice and responsive but doesn't feel like i'm actually flying, felt more like noclipping around. Would be nice if there was even just a teeny bit of inertia and aerodynamics to the shuriken (speeding up while flying down, slowing while flying up, etc etc)
Last the first few runs were quite boring, I think locking powerups behind an upgrade was a mistake, at least one of the powerups (probably speed?) should be unlocked by default cause it was honestly pretty snoozey until you start getting enough powerups to chain them.
Lots of criticism but I really did like it! Lots of fun, great core loop, fun little game, no bugs or jank and it's paced pretty well overall. Great job!