Decent game, but it could have afforded to have started a little slower - there's no need to start with so much cash. I agree that there should be a 'hard hat' upgrade to destroy planes from beneath. Otherwise it was certainly enjoyable.
Good game, great fun. However, it feels far too short - I know it's only chapter 2 of the story, but would it have been that hard to double the number of dungeons, say, and throw in a lot more bad guys later on with perhaps a mini-boss halfway through?
Good concept, very well executed - my only gripe is that the weapons were not marked differently to the other search locations - lost count of the times I mistakenly swapped out a gun for a wrench or something...