New levels are awesome, although, I have to say, besides the fact that the new "alternate" boss, the "new" ending still kind of sucks.
Very fun though, anyone who has Ao2 should download them right away, especially since they are free to begin with, I would have gladly paid for these though.
The new levels also add 6 new briefcases to the game, I'm not sure if they affect the achievement or not (guessing they do), but I'll find out soon enough (I missed one briefcase on the boat, and missed one in the first of the new levels, so if it doesn't unlock when I get the one on the boat, we'll know).