Nice little game ^^! It feels really good, the audio is great and the music is fitting very well with the action ^^. The character is a little bit slow, but shooting feels nice and I could still dodge attacks behind the osbtacles, so it's okay ^^.
I really liked the concept of using time as ammo/health/everything, but I would have enjoyed seeing pushed a little bit further =p. Here, there is no "risk" to take, because there is no choice to do. I don't have to choose between "shooting" or "not shooting", instead, I have to shoot and get punished for it. I would have enjoyed if I had a button that fires normally without cost, and, say, a piercing shot or a grenade that cost 3 minutes, so you need to be sure that shooting it would be worth it. Or maybe a "run" button that cost time, so you need to be sure that the burst of speed is worth it and allows you to dodge an attack that would have cost you more.
Other than that, it's a nice little game and enjoyed playing it, congratulations =)!