I made a big mistake when I first reviewed Duke Nukem: Time to Kill and gave the game 4 stars.  It turns out that, as the game goes along, you're required to climb, swim and basically luck out avoiding gunshots from enemies.  Enemies will ALWAYS hit you at least once before you can hit them.  Not fair.  The game is too hard, and the play control makes me absolutely sick.  For some reason, you have to hit the Up button if you want to swim down.  Makes NO sense at all.