Easier way to fight when surrounded
The easier way to fight when surrounded is to never lock on if you are new in this game because you can only attack one heartless at time.
If you have a level of 26 or less don't use abilities such as sonic, when surrounded keep jumping and attacking in the air (its harder for heartless to hit you while air born) or keep using dodge roll...
Fighting bosses
When low in health lock on to the enemy and keep running while pressing the triangle button this will call your party to attack the locked on enemy
P.S. I've finished the game in normal and in expert mode.
More tricks, tips and cheats for this game are right here - Kingdom Hearts cheats
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