Thats hardly new. Its full of the same ******** that Metacritic user reviews are full of. That is, morons complaining that 6-8 hours of excellent story telling is 'too short' because its not padded out just to reach some arbitrary value and that the game is 'incomplete' because you have to pay for 100% cosmetic content.
I'm not sure if you're talking about people in general complaining about games with great stories that are short, or about Portal 2 in particular?
If Portal 2, I just can't see how anyone could think its a great story, other than being, the same story as the first one(more or less) with a very very very very obvious "twist", its just stupid.
I don't get why people think its so funny either, most of the comments are dumb and, singing turrets, cute, maybe, brilliant, game making, meh.
Theres some good comments, some funny ones, its not so ludicrously funny I almost peed myself as so many people seem to be suggesting.
Its good gameplay, though I think there were some better, spacial puzzles in Portal 1, they really went for, "big distance = difficulty" in Portal 2, over, weird angles, weird difficult jumping between moving platforms in and out of portals. The gel's were "easy mode" if you ask me, once they were added the complexity of the puzzles became mostly about shooting gel everywhere and looking for a distant platform.
It was FAR to easy, and I don't know how anyone could take more than 5-6 hours to complete it to be honest. Co-op mode is much shorter again, none of those are issues for me.
THe thing is, it IS a budget game, it hasn't made its own engine, its not "pretty" with time intensive texture making like other games, its flat, dull, bland, again nothing I care about but its pretty "easy" to make compared to most other games with varied enviroments. So if one game takes 3 years to make and the team build their own engine, make far more varied gameworld, often a far longer game, or a real story, meaning paying writers and design teams, making quests in a RPG type thing and having things to balance with combat this is, in terms of dev time, incredibly quick to knock together.
Its not a AAA game, it shouldn't have come anywhere near AAA pricing and the reason people are dissappointed is because you get very little for your money. When you pay for a game you're paying for the work put into the game, the time people put into it and get paid for, and some profit on top.
AS with so many games its a dumbed down version of the first game, for me it both lacked more complex/varied puzzles than the first game(despite being way longer) and reused the jokes, the idea's the style, the banter from the first game, while charging a crapload more for it. Its rather like if Dragon age 1 was £30, and Dragon Age 2 was much much worse, rehashed, rushed, reusing everything but simplified, and it was also £60.
At £10 Portal 2 is a laugh, simple fun game for a couple days, then never to be played again, at current pricing, its a joke.