you trade between islands then buy bigger ships so you can defeat enemies
A person can defeat Raptin in Secret Island by fighting him aboard the Starship. A person will then be able to fight Dynal.
You can go to another island and complete it. When you get a medallion you have completed that island :)
yes
(The solution is at the related question "How do you beat Steamworks Island")
how do you defeat the game developing island
A person can defeat Betty Jetty on Super Power Island by avoiding the lasers she shoots. This makes her mad and allows the comic book shop owner time to defeat her.
you get them in the black hole
defeat all the trainers there
tell the prayer
You have to defeat them.
bad
Defeat the Cinnabar Island Fire type gym leader Blaine Defeat the Cinnabar Island Fire type gym leader Blaine