Here is the full list of all 48 LEGO Star Wars III: The Clone Wars achievements worth 1,000 gamerscore.
Using the Force, take control of a Super Battle Droid and destroy 50 other Droids.
Using the Radio ability, command troops 50 times.
Complete: 5 Loop the loops, 5 Back flips, 5 corkscrews.
Hijack 20 enemy units in Ground Battles.
Defeat Anakin with Count Dooku
On a flying level, land a space ship whilst controlling Lando Calrissian.
Complete the game to 100% (Single Player Only)
Collect all Gold bricks. (Single Player Only)
Convert every system to the Republic. (Single Player Only)
Convert every system to CIS. (Single Player Only)
Free all villains from the Resolute brig. (Single Player Only)
Collect all the minikits. (Single Player Only)
Unlock/purchase all 'Clone' characters. (Single Player Only)
True Jedi in every level. (Single Player Only)
Overheat and destroy 50 gold LEGO bricks.
Complete Zillo Beast.
Have all your party members disguised as Senate Commandos in Hostage Crisis. (Story mode only)
Use Yoda to defeat 5 enemies with one lightsaber throw.
Unlock/purchase all 'Droid' characters. (Single Player Only)
Complete Legacy of Terror.
Complete a story level without dying (and no invincibility cheat).
Collect all Red Power Bricks. (Single Player Only)
Complete all Bounty missions. (Single Player Only)
Complete Hostage Crisis.
Complete Castle of Doom.
Land on the Invisible Hand.
Win 3 consecutive Arcade Mode Battles.
Complete The Hidden Enemy.
Complete Ambush.
Complete Blue Shadow Virus.
Complete Grievous Intrigue.
Complete Storm Over Ryloth.
Complete Innocents of Ryloth.
Complete Weapons Factory.
Complete Defenders of Peace.
Deploy 500 Clones.
Complete Jedi Crash.
Complete Gungan General.
Complete Liberty on Ryloth.
Complete Rookies.
Destroy 100 Droids with the Clone Chain-gun.
Complete Lair of Grievous.
Complete Destroy Malevolence.
Complete Shadow of Malevolence.
Complete Duel of the Droids.
Complete Battle of Geonosis.
Destroy an enemy building with a proton torpedo
Complete Geonosian Arena.