I had to make some hard choices today and decided to return Mirror Edge instead of keeping it :(
That means I will never reach 100% completion and I am forever stucked at 91% completion ( game + dlc).
cry...
But on the other hand getting 90 skill rating would have taken forever ( I have 57 + 5 tracks I have not played so 67 would have been possible in a few days, after that the hard work would have started...)