Sounds very interesting man! I could definately picture this in a video game!
I really liked how you combined classical instruments with a digital synth. The instruments are all well chosen and really balanced out. The drums came right on time and the drum roll was really sweet! Also the beat and rhythm are really solid throughout the whole song.
If I were you I would've experimented with some more synths and/or instruments towards the end of the song to avoid repititiveness, or at least added some more cymbals or hihats to the drums, because right now there's no change at all.
You've done some good work here, keep it going! Also pro tip: there a a lot of free sample packs out there if you search enough ;)
Please contact me if you would like to use this in a project. We can discuss the details.