Only got it because I saw the 2nd game and thought it seemed amazing and didn't want to play it before I finished the 1st one. it is a great game but like most old games a bit too hard/complicated at times. Save frequently in case you die/don't do something in the right order.
It has no story, the level based upgrades you get are random, the upgrades you can buy are very limited, to top it all off it has a steep curve to how hard you fall when you fail a mission and it is the most artificially steep game I've seen, to make the curve harder they made the physics as you go on worse and worse. Absolutely wouldn't buy it again even for a cent, one of the worst games ever made.