I did like 10 levels(not sure, just a general feeling). I really like your game mechanics and the feeling of success when I finally made it through the first level with a bullet(In like 12 attempts). I would add an additional collectable through levels that reward me if I use the time freeze mechanic right. Like on the first level, I completed it by wall jumping without using time freeze. So it would be nice, if I collect a star for example and at the end I can submit the stars collected to show how well I did, and to compare with others in a leaderboard. Good Job.