all[/b] games from large game publishers get DLCs (in some form or another) that add to total gameplay hours these days. It's also a fact that DLCs are major auxiliary revenue generators for these publishers, so most push the developers to work on additional content shortly after, or in increasingly occassional cases, during the primary development stages of the game. It would make sense, from a development purspective, to throw anticipated trophy achievement lists into the game code at release or via patch shortly after, whether a consumer buys the DLC(s) or not.
Does it (sometimes) suck? Yeppers, especially if you lost interest or no longer have said game. Is it "the way things work" in contemporary game development? You can bet ur ass it is. :s
P.S. - An instance that really bit me in the 'nards was the Burnout Paradise deal. Certain late-game challenges that need to be completed for game "completion" are next to impossible to do with the (non-DLC bought) cars you unlock thru normal playthrough. On top of that, a good deal (I'd honestly say approx. 20%) of game achievements
require you to do tasks with a certain type of DLC-obtained car. Breakin' my balls, EA... breakin' my friggin' balls...