It was released on Tuesday and I had finished the single player part by thursday, and the coop part yesterday. I still most of the coop achievements to unlock, but it doesn’t seem so fun now that I’ve solved all the puzzles.
I started Tuesday morning, finished it by Tuesday night, so I agree it was short (holiday woo). I would’ve liked a longer game, but it was still amazing. I also hope it sees further support and mod tools so we get more content in the future. Judging by what we saw with L4D and TF2, I think its reasonable to expect more for Portal 2, but only time will tell.
I haven’t finished yet but I haven’t been playing much. Compared to the first game it’s length is acceptable, especially considering there is coop now. I sure hope there is DLC down the road, along with extra puzzles etc. It wouldn’t be hard to do I’d imagine.