You can't get passed them. You go into the tunnel and figure out that picture then when you do, you find yourself back in the museum. I could tell you the rest but that's another story.
You hide behind the furniture.
If on Counterfeit Island, hide behind the plants and statues.
its at the place where you take a tour. right past the clown store.
you cant its part of the island mission
You use the invisibility drink you get.
When you travel to Counterfeit Island you go right past the under ground tunnel keep going right and you'll see it.
on spy island you put the chameleon suit on and go to the docks and get past the B.A.D guys and get to the door
move the arrows around so that you don't get hit by the snowballs that they are throwing at you
There are no snowballs on Counterfeit Island. (see the related question)
You have to get a balloon.
You hide behind the statues.
all you do is get a balloon and sneak past them but pace yourself.