Good, but not great
Medal of Honor: Pacific Assault, from what I've seen, is one of the better MOHs to come around after Frontline. And it has a great story to it as well, which is why I preferred it to Airborne.
As Pvt. Thomas Conlin, you'll fight through major battles in WWII, mostly in the Pacific Theatre, along with your three buddies Willy, Jimmy, and Frank. Willy's an Ace with a rifle, and Jimmy's a great medic, and Frank is a natural leader.
Throughout the game you'll spend most of your time clearing out encampments, clearing beaches and some flying too. it's full of action and has a realistic system in which a medic can heal you if you are low on health. It also gives you a large arsenal of weapons, mainly Japanese, and it moves away from the normal European theatre of WWII. Along with great graphics, this game is value for money.
However, this game is not without flaws.
Some parts of the game could be done without, such as the flying, which was very irritating. Another thing is that sometimes the game glitches and even you've done all your objectives, sometimes, for example, a door might not open, thus rendering you unable to complete your mission and forcing you to reload the checkpoint, and how sometimes your teammates guns can go through their head.
Other than that, it's a mediocre game. Rent it first. Or play a demo.