Questions answered by tomekbralek

Yes , you have to press ~ key. But first you have to enable it in Options>Keybard>Advan...

Of course you can also use console (under ~) (it's great thing in Source Engine !) and type : map

Make sure that there's no pad plugged in , and in options you've choosen mouse , not game-pad. I don...

In fact Portal 2 is already unlocked. But players made it comes lot faster ! :)

The only limit is free space on your hard drive , and on your Steam Cloud.

In most Valve productions it's E key. But of course u can change it in options if you don't like it ...

As other said , I can confirm 5 chambers within up to 8 levels in each.

Probably 22 as I read. But I don't know if there's 'behind-scene' story.

They are also send to Steam servers, so you can watch them on your Steam communicyty profile.

Yes , you can. But IMO you should play P1 first for it's great storyline.

Use bridge to block bullets.

You should play Portal 1 first of it's great storyline ! :)

Library -> Portal 2 -> Properties -> Set launch options But I think that you can also do it with...

No , it's only for PS3 with free Copy.

If you make gestures at Co-Op mode , like High Five , GlaDoS will say funny quotes.

That was promotion for Portal 2 and small Indie games made by Valve (promotion not indie games). Pla...

Now it's finished. And players REAALLY make Portal 2 comes faster.

You will also have to encrypt game files downloaded with Pre-Load.

It's decrypting files , from Pre-load. They were crypted to block players who wanted to play it befo...

Depends on your hardware , and luck. Don't get panic while it stucks , just wait :)