all you do is get a balloon and sneak past them but pace yourself.
You have to get a balloon.
try and stay out of sight of gaurds
You go to the docks and sneak past the guards and get inside the door.
You have to dress like one of the guards to pass them, but you have to walk like regular people do.
When you get past the Black Widow's guards, then you will use it to enter her layer. Have fun! :-)
drink bleach, everyone knows that...
Go carefully. When the guards are about to see you, hide behind the things there. When you get to the top, use the key card you should've gotten earlier.
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!
Use the camoflage suit and sneak past the guards while they're not looking.
To pass the Security Room, wait until the guard's shadow is no longer on the window.
The Countryside is only involved twice in the island quest : once near the very start (Balloon Boy) and once at the end (Black Widow). The final part of the quest is to sneak past the guards and confront the Black Widow in her treasure room. (see the related question)
the past tense of sneak is 'sneaked', but the present is 'sneak'?? e.g 'why do you always sneak on me?'