Underworld is definitely a great game, but you will have to look past the aggravating camera and some technical issues.
The gameplay is pretty similar to previous Tomb Raider games, but Lara does have some new moves. Some new moves are the ability to free climb, balance along thin beams, and the ability to fire her pistol while she's hanging onto something. The gameplay does have the same old issues, and they're perhaps even worse here, due to the game being more open. You still have the collision issues, glitches, and the camera issues. I think the camera is actually a lot worse here than it is in Anniversary. It was starting to give me a headache, but solving puzzles, and climbing walls are still as joyful as they've always been. Solving puzzles are still satisfying. You do have a few sections where you drive Lara's bike around, and they're not that fun. It just doesn't control well or feel fun. The combat is also still weak, with the same dumb enemies. You do have a few weapons to choose from, such as Lara's signature pistols, a shotgun, and more. You can also throw grenades. One nice thing is the ability to sprint. It's not necessary, but it's a nice addition as it speeds up the gameplay, and you can get to areas faster. There are also downloadable outfits, downloadable add-ons, and easy achievements. If you liked the previous Tomb Raiders, you'll definitely like Underworld, but probably not as much.
The graphics in Underworld are very pretty, but they do have some faults. Lara looks absolutely stunning, and is easily one of the most detailed characters I've ever seen in a video game (she looks very sexy). Her animations are excellent as well, with realistic reactions, such as when running through bushes. The environments are varied and pretty. You've got a jungle, snowy mountains, and more. You may even stop every now and then to look at the environments (or Lara). There are however, the occasional animation glitch and frame rate dip. But really, nothing serious.
The sound is pretty good, but not as good as the graphics. The guns sound good and appropriate. The music is pretty good, when it's there. I do think the voice acting is pretty good, and it made the story enjoyable for me. Really my only complaint is there wasn't enough of the music.
As far as value goes, there's quite a bit of replay value here. You can play the game on different difficulties. There's also over 100 artifacts, which unlock bonus content and achievements. There are 6 relics to find, which unlock achievements, and I'm not sure what else they unlock (maybe outfits like in Anniversary?). The game will probably take around 10 hours or less to beat, and once you're done, you can buy two downloadable add-ons that expand the experience. They're 800 points ($10) each though, and both of them are only a couple hours long from what I understand.
Story: Decently told and is entertaining. Voice acting is solid too. 8/10
Gameplay and controls: Same great Tomb Raider gameplay, although it still suffers from the same issues, like the camera, collision issues, and glitches. These will frustrate, but solving puzzles and climbing walls are still fun.8/10
Graphics: Lara is one of the most detailed characters in a video game, making her sexiness even more astounding. Environments look fantastic and the animations for Lara are excellent and realistic. Some minor frame rate issues and animation glitches. 9.5/10
Sound: Guns sound good and the voice acting is solid as well. The music is good, but I wish there was more.9/10
Value: Lots of artifacts and relics to find. Downloadable content as well, and the adventure is a decent length, around 10 hours. 8.5/10
Tomb Raider Underworld is a great game. If the camera and glitches were fixed, or at least improved upon and lessened, Underworld would've easily been awesome. But as it is, Underworld is a great game. It's well worth your time and money, especially if you're a fan. While I wouldn't say it's as good as Anniversary, I still highly recommend it.