Doesn’t really sound like drum n bass, more like a good video game track! But it’s not the genre, it’s whether it’s sick, and lemme tell you… it’s pretty sick!
The only problems I see are the snare transitions… they just don’t sound right, and that’s all that it is, next is the video game vocals, you’d probably need to make them more distorted to suit the vibe of the song, plus just like the snares, it just doesn’t sound right, especially “Game, not over”, although this is a motivating line, it also disrupts the flow, I’d recommend saying “It’s not over yet” instead as a sample, this way it flows much more smoothly.
But on the other hand, the melodies are very classic, yet they also sound familiar! In fact, this entire song reminds me of MDK’s style, without the “Wubstep” as he calls it. You put this in front of me and not tell me who it is, I would’ve probably said MDK. I like how clear all the instruments are and can be heard, from the bass to the pad. The cute chiptune melody arpeggios at the start and end really fit in with making both an outro and intro.
Conclusion, really good piece, it’s just some parts could be improved, as all songs could be! Amazing work, and remember “it’s not over yet” ;)
Edit: the sample parts, it’s not your fault, although it still doesn’t fit, it still just doesn’t flow right, just pointing out a mistake I made, since you didn’t make the samples yourself. Forgive me for my tom foolery. And thank you @nimblegend for the comment, I would have never found out about the mistake I made lol.
TenodiBoris 
