Man, I relly enjoyed this urban and dirty music style, I think it really fits with the mutated rats thing, so I'd say you both nailed that aspect. This is very specific, but some samples/vst (specially in track 2 and 3) really gave me a PS2 kinda OST vibe, similar to the ones used in Ratchet and Clank or Armored Core.
My favorite was Krawl: Only a couple of seconds in and you get immersed in the poor streets fill with problems and government conflict. The juicy bass and pads, the dry piano, groovy drums and glitchy sfx really sold the atmosphere to me
I also enjoyed Rat Race Baby: While I was listening I was thinking that this sounds similar to some tracks of Gran Turimo 4, the drum & bass rythm mixed with the floaty pads are really nice (That's the kind of sound I meant it sounded like PS2 xD)
Great entry, congrats to both of you!