you have to take your gun and shoot the things around ''Mustacio's people'',
the girl, the money bag & the dice, the far right guy the root beer bottle, the guy to the right of him the gun above the fireplace,and the last dude i think the sack above him.
El Mustacio, once you daze his people, he will run away, you have to chase him & lasso him & then bring him to the Marshal.
It will be Wild West Island.Where you will defeat Mustachio Grande and his gang.
i WOULD say look in thhe poptropica secrets .it has walkthroughs of every island. >:/
poptropica
go check a guide on youtube.com :P
you can shoot targets in the shooting contest to get a better gun also you can shoot people when you try to defend the train and when you need to defeat the el mustachio gang.
The Mustachio Gang is in Wild West island, you'll need to advance through the island to put them in jail after defeating them.
You use the transparency tonic.
Play ShootOut And Shoot Them I Think.....................But I Think That's How Defeat All The Bad Guy On Wild West Island!
well you jump over the rock and hit them with potatos
shoot the items from right to left: root beer can/ a gun/ candle flame/ bag of coins that will lure out the gang chase em and lasso mustache and take him back to diamond plains then the marshal will give you the island medallion for more information, type in 'How do you beat Wild West Island on Poptropica?' in the question bar on answers.com
you use the spud shooter which you get after you defeat everyone at the shooting contest.
you have to look for him heres a tip when u see the broken cage thing follow it