you dress as one.
You get it from the big boy head and after the bank is robbed.
Get all the pieces to the map (hint: the last piece is in the bank after the gang destroys it.)
you have to buy the drink that makes you invisible and then sneak up go in the shelter and shot the bad people
you use them when you go into the hideout of the mustachio gang.
The bandits are hiding in their secret hideout (bottom left corner).
that's funny
on the top shelf next to the wanted sign
well you jump over the rock and hit them with potatos
You have to search and find the map pieces and then it will be added to your map
no there isn't
Use the concentration one to play train robbery, and the invisible one at the hideout.
You have to board it in Diamond Plains when you first repair the Clock Tower. This triggers the Train Robbery sequence, without which you cannot get the second half of the map to the gang's secret hideout.