not bad.
..but theres some really bad ducking going on. and its not "good" ducking like a sidechained kick on a compressor in some electro house track. its quite distracting.
The bass sounds a bit muddy because of it.
It sounds like you need to roll the bassline off at about 55hz, very difficult to explain how I would fix it on here. I could quite easily fixx it though.
Effectively what you have is several instruments all competing for the same bandwidth in your perceptable EQ range. This means that your kick, and your sub / bassline are both occupying the same frequencies.
What i mentioned before about rolling offf the bassline, is because below 50 hz, you're "pushing air" ie the speakers are moving at such a low frequency that you cannot actually hear the sound, its far too deep.
Well this sound that you cannot hear, still exists in the mix, and therefore has an effect on your limiter, and might be what is causing this crazy ducking phenomenon.
your kick drum should have the low frequencies rolled off at about 70hz,m so as to not interfere with the sub. I can hear the kicks and the subs fighting it out. I hope this helps. I've probably gone overly complicated. you can PM me if you want any decent tips.
I'm assuming you use fruityloops/FL Studio? everyone on newgrounds except me seems to use it ;-S