Activate the following cheats by entering the corresponding codes:

CHEAT FUNCTION - CHEAT CODE
Big heads - Press UP, DOWN, LEFT, RIGHT, LEFT, RIGHT, DOWN, UP at the "Cheats" menu in the shop.
Mini Gun - Press DOWN, LEFT, RIGHT, UP, RIGHT, UP, LEFT, DOWN at the "Cheats" menu in the shop.
Ultimate Lightsaber - Press RIGHT, DOWN(2), UP, LEFT, UP(2), DOWN at the "Cheats" menu in the shop.
Spider Droid - Press UP, LEFT, DOWN, LEFT, RIGHT, LEFT(3) at the "Droid-Jak UPgrades" menu in the shop.
Lightsaber Throw - Press LEFT(2), RIGHT(2), UP, DOWN(2), UP at the "Combat UPgrades" menu in the shop.