Really good!
I absolutely love this track from Donkey Kong Country 2. It's definitely one of my favorites, and you did a good job remixing it. I do have a few pointers to make, however.
From the way it sounds, you tried to somewhat replicate the synths that were used in the original version, but the problem is that most of your synths were not well-defined, in my opinion. What I am meaning to say is that they aren't clearly heard, and their ends can get just a bit washed up in the background.
The entire set of percussions came in all too abruptly. The bassline changed quickly as well, and it seemed to mess up the flow of the track. I loved the bassline before and the bassline after, but this transition was extremely short when it could have been slightly longer, smoother, and better! I also think the percussion could have been stepped up just a little bit.
Other than these points I've made, I think you have an amazing remix. I'm definitely going to have to send out a remix of this track at some point in time.