no dude, just complete the second part to every world
and i mean every world
then on the map screen it should show hollow bastion surounded by a cloud of darkness
when you get to hollow bastion, you should be attacked by strong heartless and the security system
it then tells you to go to leon's house
there an event happens, and you head off to ansem's computer and tron's world
when you're in tron's world,head towards the i/o tower and head right not left opposite from the simulation hangar
there you ahould fight some regular yellow bike heartless and the hateful devestators
save tron's limit move till the end when two devestators attack
one devestator is hard enough, but two?!
that's just murder
then you head into the whatever the room is called and get an item from leon
you then go to the simulation hangar and off to the mcp
oh, and on the simulation solar sailer battle, start off with tron's limit and kil the first set of devestators with it, and then attack as crazy as possible and as quickly as possible
when a second wave of devestators attack, use tron's limit move or if it's not full yet, use an ether to fill it back up and use it
attack after the limit and finish off any remaining devestators
do this quickly since there is a time limit
hope that helps