Pretty cool
I don't see how this ties into Tankmen, but the chord progression is pretty sweet, and I love the flow from one "movement" of the song to the next.
To improve:
I don't think the cymbal at 0:23 goes with the song (at least at that point). It seems too abrupt to start playing like that. Either build up to it, or play something a little more subtle.
The part at 1:19 could use some extra time. I don't know what time signature is going on at that time, but it sounds like a Beethoven piece that was cut short. Either expand on it or cut the drum break by a measure.
The bassline starting at 1:39 is awesome. Don't change it :)
Overall, great job!