Successfully complete the indicated chapter by collecting 10 Minikits within the time limit allowed in Challenge mode to unlock the corresponding character(s) from the original Lego Star Wars:

R4-P17, PK Droid: Episode IV: Chapter 2
Battle Droid, B. D. (Security), B. D. (Geonosis), B. D. (Commander): Episode IV: Chapter 4
Chancellor Palpatine, General Grievous, Grievous' Bodyguard: Episode VI: Chapter 5
Clone (Episode III Pilot): Episode IV: Chapter 6
Clone (Episode III Swamp): Episode V: Chapter 4
Clone, Clone (Episode III), Commander Cody, Clone (Episode III Walker): Episode VI: Chapter 3
Disguised Clone, Boba Fett (Boy): Episode VI: Chapter 1
Droideka: Episode IV: Chapter 5
Geonosian: Episode V: Chapter 3
Jango Fett: Episode VI: Chapter 2
Luminara, Ki-Adi Mundi, Kit Fisto, Shaak Ti: Episode V: Chapter 1
Mace Windu, Mace Windu (Episode III): Episode VI: Chapter 6
Padme (Battle), Padme (Clawed), Padme (Geonosis): Episode V: Chapter 2
Padme, Anakin Skywalker (boy): Episode IV: Chapter 3
Queen Amidala, Royal Guard, Captain Panaka: Episode V: Chapter 6
Super Battle Droid: Episode V: Chapter 5
TC-14: Episode IV: Chapter 1
Wookie, Jar Jar Binks: Episode VI: Chapter 4