Ultimate saber
In level 14, fight 100 opponents, including all the troop types from the game, to unlock the ultimate saber. The ultimate saber enables one-hit kills on all enemies except for bosses. You can turn it on or off in a menu that appears when the game is paused. You only need to get it once with one of the characters for all characters in that mode (one- or two-player) to have access to it.

Level 11: Droidekas
Complete the game with Plo Koon.

Level 12: Kaadu race
Complete the game with Adi Gallia.

Level 13: Gugan round-up
Access The Gugan round-up level by finding the three Gugan artifacts in the following locations:

Naboo Swamp -- near the end of the second level down in crevice.
Tatoonie -- on a medium-size plateau, up against the screen. Jump forward in a leap of faith. It is inside the hut with the Jawa in front of it.
Gugan Ruins -- near the end, after the covered trap, right next to a tree and a large patch of bushes.

Level 14: Survival challenge
Complete the game with Mace Windu.

Points needed per level for maximum experience