Much better than the first! Improved A.I, difficulty and other things. This is a real stealth game if you don't want to go in guns blazing.
The first mission took me about an hour to complete without getting caught, and that was on easy! As all games it has its flaws but no where near as many as the first. This time you can carry a body without being seen all the way across the map. Much more realistic A.I. You have to be very patient player if you want a truly rewarding experience.
100 times better than the original, and this one I actually enjoyed thoroughly.