*SPOILERS* wait a second here, but didnt i finish killing off the bugs after about level 28; descent 4. nope... ok.
so after this little rant i have just went though... my basic point there was this game is very very repetitive with a storyline that is so far under par. the only people who i would recommend this game to..are those "under the influence" only because you can destroy these gianticsoarous buildings with one shot of a rocket launcher. Before i rented this game, silly me forgot to check the achievement list, was that ever a mistake, you have to complete, all 54 boring and repetitive missions to get only 1 stinking achievement.
The only good parts about this game are that there are a wide variety of weapons that you can choose from and you can fly a helicopter (and somehow not get hurt if you fall out all the way in the air). Other than that i cant really find any other OUTSTANDING features this game has.
so to sum it all up, this game sucks, don't buy it, don't even consider renting it either. just you know what, don't even think about it. thats only my opinion though.