As with pretty much any other game on these systems, LSW:TCS has Achievements on the XBox 360 version of the game. The PS3 version does NOT have Trophies. The Wii Version doesn't support achievements naturally, and the Steam PC Release also doesn't have Achievements.
Gamerscore: 20
Description: Finish Episode I in story mode.
Simple Progression Achievement. Complete Negotiations, Invasion of Naboo, Escape From Naboo, Mos Espa Pod Race, Retake Theed Palace, and Darth Maul in Story.
Gamerscore: 20
Description: Finish Episode II in story mode.
More Progression. Complete Bounty Hunter Pursuit, Discovery on Kamino, Droid Factory, Jedi Battle, Gunship Cavalry, and Count Dooku in Story.
Gamerscore: 20
Description: Finish Episode III in story mode.
Progression. Complete Battle Over Coruscant, Chancellor in Peril, General Grievous, Defence of Kashyyyk, Ruin of the Jedi, and Darth Vader in Story.
Gamerscore: 20
Description: Finish Episode IV in story mode.
Progression. Complete Secret Plans, Through the Jundland Wastes, Mos Eisley Spaceport, Rescue the Princess, Death Star Escape, and Rebel Attack in Story.
Gamerscore: 20
Description: Finish Episode V in story mode.
Progression. Complete Hoth Battle, Escape From Echo Base, Falcon Flight, Dagobah, Cloud City Trap, and Betrayal Over Bespin in Story.
Gamerscore: 20
Description: Finish Episode VI in story mode.
Progression. Complete Jabba's Palace, The Great Pit of Carkoon, Speeder Showdown, The Battle of Endor, Jedi Destiny, and Into the Death Star in Story.
Gamerscore: 60
Description: Unlock all characters.
Progression. Unlock every single character and vehicle in the game. The story run has to be completed to unlock all characters available for purchase in the store. Anakin's Flight must be played for the Naboo Starfighter, and the LEGO Indy trailer must also be viewed to unlock Indiana Jones for purchase. Using Codes will work.
Gamerscore: 60
Description: Collect all available red bricks.
Progression. Two ways to do this. 1: Find all the Red Bricks in the stages during Free Play, Power Brick Detector makes this easier, it's in I-4, or 2: Build the 160 Gold Brick Stud Fountain outside the Cantina once you have all Gold Bricks, this will automatically unlock all Extras.
Gamerscore: 60
Description: Collect all available gold bricks.
Progression. There are 160 Gold Bricks in total, and this is how you get them all: Completing every level in Story (36), Completing the Minikit for every level (36), Obtaining True Jedi in every level (36), Completing the Character and Minikit Bonus for every Episode within 5 Minutes (12), Completing all six bonus levels from the Cantina bonus room (6), Completing all 20 Bounty Hunter Missions (20), Purchasing all 14 Gold Bricks in the Cantina Bar (14).
Gamerscore: 60
Description: Collect all mini-kits.
Progression. Collect all 10 mini-kits in all 36 main Episode levels. The Minikit Detector Extra found in V-6 is very useful for this achievement.
Gamerscore: 100
Description: Complete the game to 100%.
Progression. Do everything! Checklist: 36 Story Levels, 36 Minikits, 36 True Jedis, 36 Challenges, 6 Super Stories, 6 Character Bonuses, 6 Minikit Bonuses, 6 Cantina Bonuses, 20 Bounty Hunter Missions, Purchase all Characters, Purchase all Extras, Purchase all Tips.
Gamerscore: 20
Description: Perform 20 unblockable combo attacks.
As a Jedi or Sith, when you time your attacks perfectly your lightsaber sparkles. You need to complete the full 3-attack chain perfectly 20 times. You need to press the button pretty much near the end of the swing. It can be tough to get used to at first but once you have the timing down this achievement is easy.
Gamerscore: 20
Description: Perform 200 perfect lightsaber deflections.
As a Jedi or Sith, press the attack button just before a blaster bolt hits your character. You will deflect the bolt back on the enemy. This will likely come naturally as you play the game, but if you're missing it, II-2 is a great stage due to Slave I in the boss fight. Perfect Deflect (found in II-4) is quite useful here, as you don't need to time the press with the Extra on.
Gamerscore: 20
Description: Perform 200 blaster character dodges.
As a Blaster character, pressing the attack button as a Blaster bolt approaches will cause the character to dodge the attack. 200 dodges will get the achievement. The easiest place to do this imo is IV-5, in that big room with all the Stormtroopers, as they constantly spawn, mashing the attack button should get this easily.
Gamerscore: 20
Description: Destroy 300 stormtroopers.
This will come quite naturally while playing the OT half of the game and is pretty self-explanatory. If you're stuck on Stormies to destroy, that same room in IV-5 is quite useful.
Gamerscore: 20
Description: Destroy 300 droids.
Pretty much the PT version of the above achievement. Will also come quite naturally while playing the PT half of the game. II-4 is a goldmine for Battle Droids.
Gamerscore: 20
Description: Destroy 50 TIE fighters
Like the above two, except for the Vehicle version in the OT. Easy and simple here. You'll get it just by playing normally. Any OT vehicle stage will be useful.
Gamerscore: 20
Description: Ride all mount types & ride-ons.
Take a ride on anything that you can jump into and move around in throughout the game. In Episode order, they are Naboo Speederthing (I-5), AT-XT (III-4), Bantha, Dewback, Landspeeder (IV-2), Landspeeder, AT-ST (IV-3), Tauntaun (V-2), and BT-16 (the Spider-thing, VI-1). Many have said that only the Bantha, Dewback, Landspeeder, Tauntaun, and BT-16 are required for the achievement.
Gamerscore: 20
Description: Sell your landspeeder to the Jawas.
In Mos Eisley Spaceport (IV-3), take the Landspeeder through the door that ends the first area. Destroy the barrier directly above the entrance to the new area with a Bounty Hunter or AT-ST and drive the Landspeeder into the Car Wash. Jump out and a Jawa will come out and inspect the Landspeeder. Note: If the Jawa dies, by either your hand or Stormtroopers, you cannot get the achievement, and you have to reload the level.
Gamerscore: 20
Description: Break Jar Jar 20 times.
Easy peasy, and something I'm sure most people have wanted to do at some point. With any character who can defeat an enemy, with the second player as Jar Jar. Kill him 20 times!
Gamerscore: 20
Description: Destroy 5 people with one attack (Jedi super slam).
The Jedi Super Slam is the Double Jump attack for a Jedi or Sith. Jump twice then hit the attack button to perform it. The easiest place to defeat more than five enemies is Darth Maul (I-6). In the room with the Commander Battle Droids, they will continue to call in backup, simply wait for enough enemies to spawn, and then Super Slam them.
Gamerscore: 20
Description: Disable 5 Droidekas with R2D2.
All Astromech Droids have a stunner they can use with the Attack or Special buttons. Using R2 (it HAS to be R2), disable 5 Droidekas. Retake Theed Palace (I-5) is easiest to do this, as they are immediately available as the level begins.
Gamerscore: 20
Description: Destroy 10 characters with one thermal detonator.
As any Bounty Hunter, the Special button throws a Thermal Detonator. The easiest place is either Darth Maul (I-6) in the room with Commander Battle Droids, or any of the Character Bonuses. Simply wait for the enemies to spawn and then take them out.
Gamerscore: 20
Description: Pull 25 arms off other characters.
Chewie has a special Melee attack when fighting Stormtroopers or Clone Troopers, instead of smacking them, he rips their arms off. Do this 25 times by pressing the attack button when standing close to an enemy.
Gamerscore: 20
Description: Set off all three Discos.
There are three discos to start! 1: Inside the Episode II room in the Cantina, simply force the disco ball together. 2: Discovery on Kamino (II-2), in Free Play Mode, enter the room with the Imperial Panel across from Jango's Room, and step on all the lights on the floor to get the party started! 3: The Great Pit of Carkoon (VI-2), likely the first one you'll do as it's standard progression. Once you open up the doors to the top of Jabba's Sail Barge quickly step on all the lights to get another party started!
Gamerscore: 20
Description: Death Star Trench Run without Firing.
In Rebel Attack (IV-6), do the Trench Run without dying or firing your X-Wing Blasters. The Achievement should pop once you reach the end of the Trench itself. Invincibility makes this a piece of cake.
Gamerscore: 20
Description: Start a Cantina Fight with 50 casualties.
Obtainable right at the start of the game! Simply beat up 50 people in the Cantina.
Gamerscore: 20
Description: Make 100 Build-its throughout the game.
This will unlock naturally as you play the game. Build-its are the jumping piles of LEGO pieces that you then build using the Special button. Build 100 things, and you'll get the achievement.
Gamerscore: 20
Description: Max out the stud counter.
Have 4,000,000,000 studs on you in the Cantina. This is your current total studs, not accumulative studs throughout the game. Some runs in Mos Espa Pod Race (I-4) or standing under the Stud Fountain with all multipliers will easily get this.
Gamerscore: 20
Description: Finish Cloud City still wearing a Helmet.
You can attempt to finish Cloud City Trap (V-5) without losing the Stormtrooper helmet at all. It's doable but quite difficult. Alternately, use a Ghost in Free Play, or simply Save & Exit the Level in Free Play once you're wearing a helmet.
Gamerscore: 20
Description: Wear Every Hat.
Wear all six hats given by dispensors in the game. The first four: Baseball Cap, Indiana Jones' Fedora, Top Hat, and Princess Leia's Cinnamon Buns can be found by cycling through the hat dispenser in the Episode IV room in the cantina. Stormtrooper Helmets are found in Rescue the Princess (IV-4) and Death Star Escape (IV-5), and the Boussh Helmet can be found in Jabba's Palace (VI-1).
Gamerscore: 10
Description: Crossover: Destroy Anakin with Vader.
All these upcoming Achievements are easiest to get by either using two players or entering a level as one character in Free Play, exiting out, switching to the other, and choosing the other character to get both. Anakin as a Jedi is unlocked after either Droid Factory (II-3, Padawan) or Chancellor in Peril (III-2, Jedi). Vader is unlocked after Jedi Destiny (VI-5), or A New Hope (B-4). This one is easy, with Vader and a Jedi Anakin (NOT Episode I Anakin), destroy Anakin as Vader.
Gamerscore: 10
Description: Crossover: Destroy Jango Fett with Boba Fett.
Jango Fett is unlocked for purchase after completing Jedi Battle (II-4), while Boba Fett is unlocked for purchase after completing The Great Pit of Carkoon (VI-2). Once both are unlocked, take both characters and defeat Jango with Boba.
Gamerscore: 10
Description: Crossover: Destroy The Emperor with Darth Maul.
Darth Maul is unlocked for purchase after completing Darth Maul (I-6), while The Emperor is unlocked for purchase after completing Jedi Destiny (VI-5). Once both are unlocked, take both characters and defeat The Emperor with Maul. You cannot use Chancellor Palpatine for this. It HAS to be The Emperor.
Gamerscore: 10
Description: Revenge: Destroy The Emperor with Mace Windu.
Time for some Revenge! Mace Windu is unlocked after completing Jedi Battle (II-4) or the Episode III version unlocked for purchase after Ruin of the Jedi (III-5), while The Emperor is unlocked for purchase after completing Jedi Destiny (VI-5). Once both are unlocked, defeat The Emperor as Mace Windu as Revenge for being thrown out a window! Again, Chancellor Palpatine does NOT work.
Gamerscore: 10
Description: Revenge: Destroy The Emperor with Kit Fisto.
Kit Fisto is unlocked for purchase after completing Jedi Battle (II-4), while The Emperor is unlocked for purchase after completing Jedi Destiny (VI-5). Once both are unlocked, defeat The Emperor as Kit Fisto as Revenge for being cut down so easily! Once again, Chancellor Palpatine does NOT work.
Gamerscore: 10
Description: Revenge: Destroy Anakin with Dooku.
Anakin is unlocked as a Padawan after Droid Factory (II-3), or as a Jedi after Chancellor in Peril (III-2), while Count Dooku is unlocked for purchase after completing Chancellor in Peril (III-2). Once both are unlocked, defeat Anakin with Dooku to get Revenge for having both hands and head cut off! Again, Episode I Anakin does not work!
Gamerscore: 10
Description: Revenge: Destroy Darth Maul with Qui-Gon.
While you can do this the same way as other Revenge achievements. Unlock both characters (Qui-Gon from the start, Maul for purchase after I-6) and take them into Free Play, however there's a much easier way to do this. Simply take care of the Maul boss in Darth Maul as Qui-Gon, and you'll get the Achievement.
Gamerscore: 10
Description: Revenge: Destroy Darth Vader with Obi-Wan.
Obi-Wan is unlocked in multiple variations from the Start, Discovery on Kamino (II-2), Chancellor in Peril (III-2), or Through the Jundland Wastes (IV-2). Vader is unlocked by completing Jedi Destiny (VI-5), or A New Hope (B-4). Take any Obi-Wan you want and defeat Vader. Alternately, you don't even need Vader unlocked. Go to Death Star Escape (IV-5), and use the Bounty Hunter Panel in the last area to open the door to Vader and Obi-Wan, then defeat Vader.
Gamerscore: 20
Description: Get 100 points in Arcade Mode
This can be done in any Arcade mode setting. Get 100 Points in a single Arcade match. The easiest way to do this is to head to the Senate Level, in Duel mode, with no target score, and then jump off the stage 100 times. Alternately, buy the Self Destruct Extra (in V-1), and hit B as a droid 100 times. It HAS to be 100 points on one side, so 50:50 will not count.
Gamerscore: 20
Description: Play through an entire level online
Pretty self-explanatory. Join an online game and complete one level. You don't have to be there for the entire level. You can join halfway through and still get the achievement if you play to the end of the level. The Host also does not have to be playing for this to work.
Gamerscore: 20
Description: Shoot First
This is like any other Revenge or Crossover achievement. Han is unlocked in various forms, but the easiest is after Mos Eisley Spaceport (IV-3), as Greedo is also unlocked for purchase after that level. Once both are unlocked, take Han, and Shoot First!