I played this. Frustrating checkpoints, bad gunpoint, iron sight shotguns, no enemy variety, terrible enemy AI that breaks the game's poor stealth mechanics, awful cover system, 100% linear levels, no collectibles, no alternate objectives. Just walk forward, shoot, walk forward. In a few levels you need to press A in front of missile to put C4 on it, the C4 just appears. No story, no human protagonist carriers other than Mickey Rourke who mostly just swears to himself for no reason the entire game. Monster closet enemies. Some stupid glitches--enemies that are spawning on a rope or in a vehicle are invincible so you can blow up the vehicle and the enemies do their dismount animations without taking damage as it explodes. Muzzle flash is really low res sprites.
I could never get aim sensitivity right, no subtitle options, no vsync option in game. The ending is abrupt; Mickey Rourke blows up some soviet missiles and walks out of a sub bay. He hops into a speed boat driven by Americans. He says "took you motherfuckers long enough". Then the guy in the speedboard says "I heard you lost two good men in that mission. I'm sorry." (they died in the intro cg) Then mickey rourke says "not as sorry as those motherfuckers", camera pan to exploding Soviet base. Cut to a Mickey Rourke soundboard rapping over the end credits. I actually don't get what happened plot-wise. You get dumped in North Korea. You kill some North Koreans and blow up some shit. You get told not to go to Russia. You go to Russia and find out Russia is supplying North Korea with missiles. You blow up some more shit. End of game.
If I had played on easy and thus died less I suspect this is about a 100-110 minute long game. Don't bother playing it. There's funny-bad and then there's just dull-bad and this is definitely dull-bad. And it's not like Aliens where it's a high budget failure, this is just a duffer game made quickly by a small time. Very low impact.
Edit: Oh, also difficulty achievements don't stack.