This was a complete mastercraft of a movie. I would gladly tell you what you've been told before, how amazing it is, but I won't. I would tell you to make more, but I can only picture how long these four minutes could possibly have taken. I will recommend you to continue these mastercrafts, and if I HAVE to talk about improvements, which I am not happy for, since it'd make the impression I didn't love this movie as much as I do. It would be the running. The gun effects are as perfect as they will EVER be, and the running is all I can point out. All you need to do is improve it a little tad, and then you got it. Some conversation would be fantastic, but in this specific scene there is no need for it.
Else, I'll tell you what you've heard before. It was absolutely amazing. Never seen anything like this, not even in other films like it where people are paid to try and reach what you just did.