R4R:
This song is not bad, although there are a few things that you could do to improve the song.
I'll start at the beginning. I love that dark ambient feeling that you managed to create here with that horn-sounding instrument. The way that you made it pan across the audio channels adds to the epic atmosphere. No improvements can be made here.
Next, before the first drop, the song's brostep growl can be heard. It sounds very good! The drums that are introduced here sound great as well. The buildup here is absolutely intense, and the horn that can heard here sounds good! The melody that the growl repeats adds to the intensity of the drop.
The first drop is pretty good; the basslines sound and feel great, and you managed to create an interesting melody with the growl. Once again, the drums here sound amazing. The horns appearing again and again also add to the atmosphere.
The bridge is arguably more epic than the beginning of the song. The quiet drums included here give it a very driving force. It's essentially a repeat of the beginning, and I like this as much as the beginning.
In the part immediately before the second drop, I like that drum break that you included here. However, I think that it could have used some more instruments, and the included instruments themselves sound too similar to each other. You could have made them sound unique to give the impression of a good break.
Unfortunately, the buildup and the second drop are essentially repeats of the first drop. Although the first drop was great, the fact that is was basically repeated here makes this part too predictable. Perhaps you could have included something more different than simply changing the growl's melody. For example, a new instrument playing an epic melody would have been nice. Then, the drop ends, and the song slowly fades away, which I like.
Overall, this is a great brostep track, but the second drop could have included something that would differentiate it from the first drop, and the drums in the drum break could be improved. However, the overall song sounds great, and I can't wait to hear more from you!