Meh, a lot of games have really easy achievements. I already have the majority of the Left 4 dead achievements, and I have every cod4 achievement except for the ones that require C4, martyrdom, and the really bullshit ones (Surviving a whole round would require nothing but camping, and shooting an explosive through a wall and detonating said explosive so it kills an enemy requires some amazing amount of luck).
On a somewhat related note, why are the megaman 9 achievements so amazingly ball breaking hard to get? I think one was beating the game 100 times, and another was beating the game 10 times in a row (consecutive days).