Since this song contains more than one clip, I shall givew my thoughts about each one.
Clip 1 (0:00-0:32) Great! A perfect mix between funky giutars and 8-bit. This clip has a great vibe to it, everything is well balanced and the whole thing sounds happy and is a pleasure to listen to.
Clip 2 (0:32-0:47) The beginning is pretty loud, but the rest of this clip sounds very powerful and adrenaline pumping, perfect for an action scene in a game/movie! The claps sound a bit over-distorted though.
Clip 3 (0:47- 1:06) Sounds very simple, but also has a good feel to it. Though I think the kick should be slightly louder, and you should use another synth for the clap/snare.
Clip 4 (1:06 - 1:48) Sounds pretty good, perfect for a boss fight! I kinda miss the 8-bit here though, and the 303-ish sound is a bit too loud. I also hear some slightly wrong notes in here that kinda disturb the whole thing. You can barely notice them though.
Clip 5 (1:48 - 2:18) Wow, tribal combined with 8-bit, I've never heard that before! Again this has a great vibe to it, the lead synth melody sounds so good and the bells really add to the song. This is definately my favorite.
Clip 6 (2:18 - 2:47) Perfect combination of classical and 8-bit sounds! The one thing I really didn't like was that when the strings came in the kick started to distort and clip. You should probably work on mastering that.
Clip 7 (2:47 - 3:07) This sounds very familiar, but I have idea where I might have heard it. Anyway, I am surprised that there's no 8-bit in this one, but then again that probably wouldn't fit. This is composed very well, I really dig the pizzicato.
Clip 8 (3:07 - 3:40) Again a different genre! You're pretty good at this, aren't you? Anyway, this one is also very good, really fast-paced and yet very clear. Lower your cymbals though, they hurt my ears.
Clip 9 (3:40 - 4:15) I hear that you brought back the lead from the first clip, only much faster. Good thought, because it would be perfect for a credits and/or ending scene.
I hope you can put my critizism to good use!