The first thirty seconds were interesting, engaging, and climactic. I like the instruments and melody. I expected it to be a little more creepy, but I found the melody strangely upbeat. It's a little repetitive at times, and I feel you could do more with it, but it's well-structured and catchy. I like the transition at 3:04, and the ending was interesting. Good job! ;)
Please contact me if you would like to use this in a project. We can discuss the details.