Meh, it's a slight brag imo. Portal 1 took me about 3 hours total, which is probably a bit long. This game is way way longer/trickier and I'm not using any walkthroughs or anything.
Portal 1 had only one hard part. If anyone else played it, the part where you have to destroy the air chamber to get the box. That thought never even crossed my mind. I don't consider that much of a puzzle.
But yea, there have been a few parts where I've had to seriously think for like 20 min straight to beat a chamber. From what I've seen online I would have guessed like 9 hours total for me to beat Portal 2. But I think I can beat the rest in under 1.5 hours.
Sick games though, I'd highly recommend them.
Only downside is it's cutting into my starcraft time.
Portal 1 was awesome. It was gifted to me when Portal 2 first came out. I thought it was pretty awesome, but after playing it (beating it 2 times) I didn't feel like I had to go out and play Portal 2. Maybe it's just my lack of interest in video games over the last couple of months.