Mission 1 (R2D2): Enter the Bounty Hunter area. Keep going forward, then stop once you reach a wall. Enter both holes at the side of the wall. Legos will fly out. Build it into a doorway. Inside is R2D2.
Mission 2 (Obi-Wan): 4-lom can open any door. Take him to the lift where the R2D2 control panel is located. Open it and go up the lift. Pull the levers after walking on the foot marks and enter the next room. Use the control panel again and go through to the last room. Obi-Wan is on the right. Smash through the boxes and he will be standing in the small doorway.
Bounty Hunter Missions
Inside the Cantina there is a door with a picture of Jabba the Hut on it. To open it buy and collect all of the bounty hunters (every single one!!!) then the door will open. Go inside and Jabba will be behind a counter. Go to the counter and missions will come up. Complete them all to get all 10 gold blocks.
Bounty Hunter mode
Purchase all the bounty hunters (Boba Fett, Bossk, Dengar, Greedo, IG-88, and 4-LOM) to unlock the Bounty Hunter mini-game.
Easy Studs
While in a double score area with another human player, kill them and collect their Studs. Repeat this as much as desired to get an unlimited number of Studs. The amount of Studs lost will remain the same, while the amount of Studs gained from picking up your partner's will double.
Collect a good amount of Studs, then go to a special area where the Studs you collect are x2 (for example, Episode IV: Chapter 3 in the cinema). When you get there, turn off all of your "Extras" then drop in you second player (if not already on) and attack the player with all of the Studs. On the fourth hit, the player will die and release Studs. At this point pause the game and turn on any Stud multipliers you have in the "Extras" menu. Resume the game, then collect the Studs dropped by the killed player. They will compound with the x2 of the area. For example, Studs x2 (from the area) x2 (from "Extras" menu) x4 (from "Extras" menu) for a total of x16. Turn off the "Extras" and repeat this trick as many times as desired.
In Episode IV: Chapter 1 - A New Hope, destroy all of the little panels that a Force user can open. You can also go through the Bounty Hunter or Stormtrooper doors and use the Force on all of the little panels on the wall. Another way is to go through the door that can only be opened with a Sith (for example, as Darth Vader). Then, use the 2x Score Multiplier to your advantage.
Play as a Bounty Hunter (Boba Fett, 4-LOM, Greedo, etc.) at the Mos Eisley cantina. Enter any mission. Character bonuses are recommended. Immediately when the mission loads, pause the game and return to the cantina. Once there, go to the outskirts of the cantina and destroy every trash can, ship piece, and platinum object you see with your bounty hunter's blaster and/or thermal detonators. Collect all Studs possible. Repeat this process as many times as desired. This is a quick and easy way to get at least 20,000 to 30,000 Studs each time.
Gold Brick bonuses
Collect the indicated number of Gold Bricks after completing all chapters of the listed episode to unlock the corresponding bonus:
Episode IV Character Bonus: 8 Gold Bricks
Episode IV Minikit Bonus: 8 Gold Bricks
Episode IV Super Story: 8 Gold Bricks
Episode V Character Bonus: 16 Gold Bricks
Episode V Minikit Bonus: 16 Gold Bricks
Episode V Super Story: 16 Gold Bricks
Episode VI Character Bonus: 32 Gold Bricks
Episode VI Minikit Bonus: 32 Gold Bricks
Episode VI Super Story: 32 Gold Bricks
Infinite Studs
When in a double score area with another human player, kill them and collect their studs. Repeat this to gain the desired amount of studs. The amount lost will remain the same, while the amount gained after picking your partners up will be doubled.
Invincibility
In Episode IV: Chapter 5 - Death Star Escape in Free Play mode, use 3CPO to unlock the first door. Then, use someone who has force powers to put together the fridge in the room. The fridge will open and a Super Red Power Block will pop out, allowing you to buy Invincibility in the cantina for 900,000 Studs.
Invincibility in Multiplayer mode
This trick only works in Multiplayer mode and only stays effective for that level. When you leave a part of any level, your party will be with you no matter where they were before you left that part of the level. For example, if your friend or ally jumps off a cliff and you leave that part of the level as he dies, he will appear next to you with no hearts. He or she cannot be killed by anything except falling and/or stepping in the quicksand or deep mud from Degobah. This effect will end if you die from falling or switch characters. This can be repeated as many times as desired.
Lego City
Get 60 Gold Bricks, then build the doorway outside.
Minikit Detector
In Episode V: Chapter 5, use the Force on the X-Wing. Then, start walking around the X-Wing. You will get a Red Brick, allowing you to purchase the the Minikit Detector for 500,000 Studs.
Passwords
Go to the bar with the elapsed game timer and percentage hologram, then go to "Enter Code"
Password - Effect
UCK868 - Beach Trooper
BEN917 - Ben Kenobi (Ghost)
VHY832 - Bespin Guard
WTY721 - Bib Fortuna
HLP221 - Boba Fett
BNC332 - Death Star Trooper
TTT289 - Ewok
YZF999 - Gamorrean Guard
NFX582 - Gonk Droid
SMG219 - Grand Moff Tarkin
NAH118 - Greedo
YWM840 - Han Solo (Hood)
NXL973 - IG-88
MMM111 - Imperial Guard
BBV889 - Imperial Officer
VAP664 - Imperial Shuttle Pilot
CVT125 - Imperial Spy
JAW499 - Jawa
UUB319 - Lobot
SGE549 - Palace Guard
CYG336 - Rebel Pilot
EKU849 - Rebel Trooper (Hoth)
YDV451 - Sandtrooper
GBU888 - Skiff Guard
NYU989 - Snowtrooper
PTR345 - Stormtrooper
HHY382 - The Emperor
HDY739 - Tie Fighter
NNZ316 - Tie Fighter Pilot
QYA828 - Tie Interceptor
PEJ821 - Tusken Raider
UGN694 - Ugnaught
Quick Studs
If you have unlocked the Bounty Hunter missions do one of them.
Choose one of the levels were you know where the guy is hiding. Find him as fast as you can. Then when you find him the remaining time will get transferred into studs. You should get 15-30 thousand studs every time you do it.
Secret level
When you collect 60 gold blocks you unlock a secret level called Lego City. To complete Lego City collect 1000000 (1 million) studs that's easy but finishing the level you don't get to keep the money.
Slave 1
Collect all Minikits to unlock Boba Fett's Slave 1 ship in the vehicle missions.
Special lightsaber moves
While playing with a character that uses a lightsaber, press X to attack, but do not immediately press it again. Wait until the slash/attack stops, then quickly press X as soon as it stops. If done correctly, the next slash/attack will feature a "sparkle" effect on the lightsaber blade. Do the same thing for a special finishing attack. Additionally, immediately after the first or second slash/attack, press Jump for a special jump that puts you behind your target. Press X while in the air for a small area of effect attack.