I really like the concept! It kind of reminds me of superhot, but as a platformer. I think that's a great take on the theme. I also liked how the action cost was tied to the level time. If you expand on this in the future, I think the difficulty could be tuned a little more. I was more or less able to complete all the levels by just hold left and double jumping over all the enemies. But I could definitely imagine levels that force me to be more thoughtful about the movement. I also didn't really have much incentive to try and use the weapon. This was seriously so creative though! Really nice work!