In my opinion, mostly poor level design. Some parts were clever or challenging, but many levels were needlessly long and punished players just to add difficulty without enriching gameplay.
Best cash I ever got was going to a new (unsearched map) and using the alien to scan the entire map. Used scientist to help clear up some of the bugs on the map so that I could have a clear path to all of the money squares. I saved a screenshot of where all the money bonuses were, then I came back the next day with the robber and looter to pick up all the cash. After the bonuses I got over $2000 and on some of the maps I was also able to complete the mission this way.
This game fails in that for most levels I had no idea how they expected me to solve the level. Instead, I just threw pieces onto the board and beat it "creatively."
That's funny, a fugitive said "I'll go with you," and I got a reward for killing him, but when I went to the next screen some girl named Smith said "You'll never get me" but acted normally.
50K is easy. When on ground do a pole-vault right into a superman. Hold the superman until near ground then do another polevault. Up-n-Out after that polevault. Trick should be worth well over 20,000 points alone.
I forgot to mention the numerous spelling errors. More focus and depth on the perspective of the Loondonites would have improved the game. Should have branching story or multiple endings.