What it does, it does well.
What it is is pretty good. Bass sounds super deep and still clear, which is all you can ask for from bass sounds. But I can't help but like surely you can add something other than just bass and drums. For example, some simple synth chords in there could really add variety and depth, while still keeping the focus on the bass (which I guess ties together your human theme, which I think is a fantastic idea). Get some more elements in there so that you can fiddle with more than just the drum pattern for variety. It needs variety. Did I mention variety? It could work great for a while if the levels were short enough and you were rotating songs for the various levels. But I've been listening to it while I write this review ... and it could use some variety. :)
But, like I said, what you do have going on is done well. 7/10 for being well done this far, but I think you gotta go a little further. I'd be happy to give you some simple chord ideas if you'd like.