I gave four stars instead of five due to one issue, during my run trough survival to cash load for my last few medals I found that the game would freeze. I do not have the best processor but it should be adequate for a flash game, this made running for cash difficult as I could only get to around 800 miles at a run. if that issue was fixed I would have no problems awarding 5 stars.
aside from that the game ran smoothly and I was a good continuation from the first I did enjoy the customisation that was simplified over the first.
I will definitely play a third if you release it.