4 - Guybrush fights the Ultimate Battle.
The big tower
You come to a small island, where three towers are built.
Let him use the plank with the small tower, creating a spring board, then let him climb the tower.
Let him jump on the springboard onto the tallest tower.
Then let him pull the lever.
In the Mansion LeChuck and Ozzie have constructed the talisman and LeChuck has been out trying it but it doesn't work. He is furious.
The Governors Mansion
She drops her Gubernatorial Symbol and Ozzie gets hold of it. He puts it in the talisman and it is activated.
Ozzie goes to the amplifier and sends the Ultimate Insult.
At this moment Guybrush returns to the Mansion,
The Battle of the Giants
LeChuck has used Voodoo and entered the statue. He quickly picks up both Elaine and Ozzie one in each gigantic hand.
Ozzie uses the talisman on LeChuck and takes command. He tells LeChuck to kill Guybrush.
The ultimate battle is about to begin.
You have no chance to win. If you use the same tactics as against Jojo the battle will continue in eternity. Your only chance is to effectuate a draw.
The battle is now between LeChuck and Ozzie. Nobody wins. Instead they eliminate each other and everything goes up in smoke.
Everybody comes out and rejoice.
Jojo takes farewell and returns to Monkey Island with the robot and everything looks like a happy ending.
As usual it doesn't take long until Guybrush annoys Elaine and she leaves him.