The graphics in No One Lives Forever may shock you because they are not well detailed at all. The characters look blocky, but the 60s style compensates for it. There are also snow effects and for a game of that time, it's quite amazing. The game actually doesn't good bad at all when you're playing it on a 22inch LCD like me. The game supports big resolutions such as 1600x1200, 1280x1024, etc. so it doesn't look pixelated.
The gameplay in No One Lives Forever is quite good. Moving around is done easily and there are no invisible walls at all. Although there isn't some custom movements as taking somebody's bullets: you just walk up to them. But hey, in the year 2000 that wasn't in any game.
The variety of levels is excelent. In some levels you're in a secret base in space, in some others in an exotic jungle or falling off a plane. The game's diversity is just so much amazing, and you'll want to play the game atleast twice. All of the levels look different, the 3D models and textures aren't repetitive.
The story in the game makes you care for the characters, along with a little bit of comedy along the way. It's pretty well told, although the cinematics are quite long. I didn't skipped one of them and I recommend you to do the same.
Bottom-line: Even today, No One Lives Forever is a good game to play. It doesn't keep up to today's games at all, but it's still a good game that can be enjoyed. There are lots of amazing games and this one is no exception.