i think there's a tutorial section in the config menu, but i'm not toally sure. it's possible to kill extractor without haste it just makes it harder. have wakka use dark atack till it works then just attack with him until the darkness wares off then repeat

for tidus, repeatedly use cheer to strngthen attacks (i hope u have that) 5 shud probably do it but u can just keep going and going. after casting them as much as u want. keep pressing triangle with tidus so that his next turn comes quicker and he can use potions/hi-potions when someone gets hit. when extractor rises up, have them both attack it to do 500 dmg quick and stop his mine attack