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.
jump behind the female guard and go up. be fast for she might catch you
you just jump on them
Jump
in the tunnel. jump on the light cord to get a paper.
you climb up light cord and jump
then you jump on the scream and then the alarm will go off
You just have to get the balloon and jump to the paper with it. If you try to get it at night then you have to be a good jumper.
Exit to the right side to enter the lair of the Black Widow. Slip past her guards to reach her treasure trove where you will face the final battle. (To pass the guards : go along the bottom, climb up behind the guard to the second level, and follow the female guard when she turns back to the right. You can jump to the springy chair to bounce up and left to where you use the Key Card.)
Go down the first level to the 2nd opening, and jump up to the right (above the guard). Wait until you see the female guard above you, to the right. When she turns away, jump up behind her and follow her carefully until you reach the chair. Jump on the chair to bounce up to the left, to the locked door.
Stay on the bottom level until you get to the left side, and the jump up on the boxes behind a guard. Then, if you time it right, you can jump to the third level, sneak past the guard, and onto a very bouncy couch. Then you use the Black Widow Card Key, to get into the locked door!
you just have to jump over them and avoid seeing any of them. i hope this is good info!
the one above the scream. the alarm will go off and you will be arrested, but this is a good thing