You must go on the Underground Tour before you can apply for the job at the museum.
Wait until her shadow moves away from the Security Room window, then run across.
You have to get a balloon.
To get past the Black Widow's guards, go along the bottom and climb up behind the one on the second floor. When the female guard walks over on the third floor (up and to your right), jump up and secretly follow her, until you can jump to the springy chair and bounce up and left to the card scanner. You open it with the spider key card.
Some users have tried jumping over the window, but this is unnecessary. Wait until you see the guard's shadow cross the window, and quickly run across.
Just run past the window when the guard's shadow isn't visible on the shades.
To pass the Security Room, wait until the guard's shadow is no longer on the window.
You must go on the Underground Tour before you can apply for the job at the museum.
There are no snowballs on Counterfeit Island. (see the related question)
Wait until her shadow moves away from the Security Room window, then run across.
At the museum, you can't enter until you have taken the Underground Tunnel Tour. (see related question)
Knock out a guard, drag him to the scanner.
You have to get a balloon.
To get past the Black Widow's guards, go along the bottom and climb up behind the one on the second floor. When the female guard walks over on the third floor (up and to your right), jump up and secretly follow her, until you can jump to the springy chair and bounce up and left to the card scanner. You open it with the spider key card.
you have to take the underground tour
You hide behind the furniture.
You don't actually. In the Black Widow's lair, go past the first guard and climb up above and behind him. When the guard on the next level walks over and turns back to the right, jump across and follow her to the springy chair.