Disney Universe

You have to get a gold medal in a world, this means an entire world including it's 3 mini-worlds with 3 levels each, so basically 9 levels. Each mini-world ( 3 levels each ) has it's own gold medal.

Obviously this is easiest on the Pirates of the Caribbean world. The exact requirements are not known but keep these things in mind:

* Collect as many coins as you can ( destroy all the destructables )
* Kill all the enemies, so don't leave the level yet when there are still enemies walking around
* Try not to die a lot, if you die too much then restart the level ( 5 deaths is a good number on each mini-world to go with )
* Try to beat all the challenges
* Get the Blue stars ( which are all in locked chests in the Pirates world )

I would highly recommend the excellent Walkthrough written by drabik to guide you to the full 1000 GS in this game. You can find it here Disney Universe Walkthrough

...not all blue stars are in chests in Pirates world. One is hung on a rope over the crocodile. [playing solo, step on red button then quickly move fire to burn rope and drop star before trapdoor opens croco pit. Playing co-op just work together to burn, drop and jump across to catch]