My honest opinion: Good effort, but the music doesn't fit with what I'm watching. You've got very intense sounding music with scenes that don't match. The music choice would suit a situation better where you need a large build-up. Also, if you want an intro to put at the start of the video don't make it longer than roughly ten seconds. Especially people who've already seen the intro once they will most likely just skip the intro, or not bother watching it at all because of it. Short and snappy is what I'm trying to say here.