Fun game! To idea of the hp being literally time is very interesting, and it's cool that killing enemies refund time.
I tried twice and my best time was around 2 minutes. Honestly I would want to play it more, but there were little things in the controls that didn't work for me - timing the attack was very difficult, preparing the ranged attack was hidden by melee attack, etc. Also the sound for the additional time was a bit jarring
I did enjoy the upgrade system - choosing more time vs upgrades was interesting. Lots of potential here!