Boy, we have a big gun! This game is fun, I enjoyed it.
But it was a little annoying to restart from the very level every time I die, but after a few deaths I mastered first couple of levels. Also I think would be better to add some character outlines when he is behind a wall and we cannot see him.
But overall the game is very good. I liked the mechanic of time = ammo\damage and character controls feel nice.