So last night I had another go at the Batman:Arkham Asylum challenges. I managed to finish the last of the non-extreme predator challenges with all 3 medals. however I still cant' seem to get more than 2 Medals on the Free Flow challenges. Admittedly I've only been trying the first one and the closest I've got was 400 points away, but that was with not getting hit once so i got the 5k Dark Knight bonus, unlocking the 'Flawless Freeflow Fighter' Achievement worth 10g. Maybe I should try the others and see how far I get with those!
After i got fed up with that I moved back to Pacific City and tried to get the 'Road Warrior' achievement in Crackdown. I had 5 races left to the hardest of which was the 'Alleys of the den' race. After several attempts and lots of frustrated swearing I finally did it, and finishing the other races netted me a total of 30g. I then went on to getting the 'Master Agent' achievement for another 40g.
So a total of 80g last night, but it could have been worse. I'm not at home this weekend so I won't be playing on the Xbox, but i'll be back on it next week, hunting down the last few solo play achievements for Crackdown. I may even invest in the DLC and try a few of those.