Enter one of the following codes at the computer in the Batcave or in Arkham Asylum at the hacked computer to unlock the corresponding cheat option, vehicle, or character. Note: Unlocked characters are only available in Free Play mode.
| Result | Code |
| Extras | |
| Always Score Multiply | 9LRGNB |
| Area Effect (Sonic suit) | TL3EKT |
| Armor Plating (Demolition suit) | N8JZEK |
| Bats (Sonic suit) | XFP4E2 |
| Beep Beep | RAFTU8 |
| Character Studs | DY13BD |
| Decoy (Technology suit) | TQ09K3 |
| Disguise | GEC3MD |
| Extra Toggle (extra Free mode characters) | EWAW7W |
| Extra Hearts | ML3KHP |
| Fast Batarangs (all suits) | JRBDCB |
| Fast Build | GHJ2DY |
| Fast Grapple (all suits) | RM4PR8 |
| Fast Walk (Magnet suit) | ZOLM6N |
| Faster Pieces (Attract suit) | EVG26J |
| Flaming Batarangs (Heat protection suit) | D8NYWH |
| Freeze Batarang (Water suit) | XPN4NG |
| Ice Rink | KLKL4G |
| Immune to Freeze | JXUDY6 |
| Invincibility | WYD5CP |
| Minikit Detector | ZXGH9J |
| More Batarang Targets | XWP645 |
| More Detonators (Demolition suit) | TNTN6B |
| Piece Detector (Attract suit) | KHJ544 |
| Power Brick Detector | MMN786 |
| Regenerate Hearts | HJH7HJ |
| Score x2 Multiplier | N4NR3E |
| Score x4 Multiplier | CX9MAT |
| Score x6 Multiplier | MLVNF2 |
| Score x8 Multiplier | WCCDB9 |
| Score x10 Multiplier | 18HW07 |
| Silohuettes | YK4TPH |
| Slam (Glide suit) | BBD7BY |
| Sonic Pain | THTL4X |
| Stud Magnet | LK2DY4 |
| Vehicles | |
| Bat-Tank | KNTT4B |
| Bruce Wayne's private jet | LEA664 |
| Catwoman's motorcycle | HPL826 |
| Garbage truck | DUS483 |
| Goon helicopter | GCH328 |
| Harbor helicopter | CHP735 |
| Harley Quinn's Hammer Truck | RDT637 |
| The Joker's van | JUK657 |
| Mad Hatter's Glider | HS000W |
| Mad Hatter's Steamboat | M4DM4N |
| Mr. Freeze's Iceberg | ICYICE |
| Mr. Freeze's Kart | BCT229 |
| Penguin Goon Submarine | BTN248 |
| Police bike | LJP234 |
| Police boat | PLC999 |
| Police car | KJL832 |
| Police helicopter | CWR732 |
| Police van | MAC788 |
| Police watercraft | VJD328 |
| Riddler's jet | HAHAHA |
| Robin's submarine | TTF453 |
| Two-Face's armored truck | EFE933 |
| Characters | |
| Alfred Pennyworth | ZAQ637 |
| Batgirl | JKR331 |
| Bruce Wayne | BDJ327 |
| Catwoman (classic) | M1AAWW |
| Clown Goon | HJK327 |
| Commissioner Gordon | DDP967 |
| Fishmonger | HGY748 |
| Freeze Girl | XVK541 |
| Freeze Henchman | NJL412 |
| The Joker (tropical) | CCB199 |
| Joker Goon | UTF782 |
| Joker Henchman | YUN924 |
| Nightwing | MVY759 |
| Mad Hatter | JCA283 |
| Man-Bat | NYU942 |
| Military Policeman | MKL382 |
| Penguin Goon | NKA238 |
| Penguin Henchman | BJH782 |
| Penguin Minion | KJP748 |
| Poison Ivy Goon | GTB899 |
| Police marksman | HKG984 |
| Police officer | JRY983 |
| S.W.A.T. | HTF114 |
| Riddler Goon | CRY928 |
| Riddler Henchman | XEU824 |
| Sailor | NAV592 |
| Scientist | JFL786 |
| Security Guard | PLB946 |
| Yeti | NJL412 |
| Zoo Sweeper | DWR243 |
Collect coins in a level to completely fill the "True Hero" or "True Villain" bar to get the corresponding rank for that level.
Get a "True Villain" rank on all levels in the Villain storyline. To reach the mission, go to right of the Batcomputer. Go down the ramp, and pull the lever to get to the villains. Go through the door on the right, and look in the corner to reach the memorabilia room. Climb the ladder at the top to access the Arkham level.
Get a "True Hero" rank on all levels in the Hero storyline. To reach the mission, go to where the vehicles are in the Batcave. Go to the far right, then down to the bottom. Step on the elevator to go to the memorabilia room. The Wayne Manor mission is in upper left corner.
Rescue all 25 hostages to unlock Hush.
Get a 100% game completion by assembling all Minikits to unlock Ras Al Ghul. Note: You must first spend 4 billion Studs to unlock the last data item after buying all other data items.
Successfully complete a level with The Joker. You should then have him in the prison. Go to the experiment room at the prison. Start zapping the Joker Henchmen that keep walking into the room. Zap the villain that follows you every so often. Every time you zap the villain that follows you, the Henchmen will give an increasing number of Studs after they are zapped and killed.
Power Bricks can be found at the following locations:
You Can Bank On Batman: The Power Brick is hidden on the left side of the cage that Clayface stands on.
An Icy Reception: In the building behind the catwalk after you find the ice cream on the floor, you must glide to the Power Brick from where you built the grappling grab spot. You will also need to do it in Free Play mode because you need someone who has super strength such as Clayface or Mr. Freeze.
Two-Face Chase: The Power Brick is hidden in the final stage of the level where you fight Two-Face. It is in the top left corner of the park on the left, behind some explosive barrels.
Riddler Makes A Withdrawal: Build a car out of the pieces of the neon light on the side of one of the buildings after you come out of the elevator. Take the car to the area where you build the wrecking ball. In the top right corner is a car compacter. Roll the car in there, then mind control the person to pull the second lever. Note: This must be done in Free Play mode.
On The Rocks: In the first room after you go inside, freeze all of the ice cream floats, and go across them. Do not mind control the person and raise the level. At the end of the floats is an iron gate. Blow it open, and go inside. Go up the ladder and down to where the hanging bars are located. Break the crates, build the switch, cross the bridge, and complete the glass sculpture. Note: This must be done in Free Play mode.
Green Fingers: In the room where you first use your power to grow plants, there is a ledge above the big plant thing. There are iron bars blocking the left passage of this ledge. Blow it open, and use Robin in the Attract suit to build a truck with a cake in the back. Bake the cake, and the Power Brick will appear. Note: This must be done in Free Play mode.
Use the following customizations:
- Gloves: Caucasian
- Face: Normal Caucasian
- Belt: Black
- Pants: Black
- Arms: Black
- Torso: Alfred Pennyworth
- Hair: Short black
- Weapon: Pistol
- Face: Normal Caucasian
Use the following customizations:
- Gloves: Black
- Face: Nightwing
- Belt: Black
- Pants: Red
- Arms: Red
- Torso: Robin
- Hair: Short black
- Weapon: Batarang
- Face: Nightwing
Accomplish the indicated achievement to get the corresponding number of Gamerscore points:
- Hero (25 points): Complete the first episode - Hero.
- Super Hero (25 points): Complete the second episode - Hero.
- Crusader (25 points): Complete the third episode - Hero.
- Villain (25 points): Complete the first episode - Villain.
- Super-villain (25 points): Complete the second episode - Villain.
- Crime Lord (25 points): Complete the third episode - Villain.
- Sidekick (15 points): Complete a level in co-op.
- Memorabilia (35 points): Collect all Memorabilia.
- League of Assassins (30 points): Unlock all the Villain characters.
- Justice League (30 points): Unlock all the Hero characters.
- It's the car, right? (30 points): Unlock all Vehicles (Hero/Villain).
- 1007 Mountain Drive (30 points): Complete Wayne Manor bonus level.
- Unbreakable (30 points): Finish a level without dying (Character) with no extras.
- 0000001 00000011 (20 points): Build the giant LEGO Robot.
- The city is safe... for now (50 points): 100% game completion.
- Cobblepot School of Driving (20 points): Smash all the cars in the robot level.
- Vigilante (25 points): Rescue 25 civilians.
- Be a Hero (40 points): Super Hero on every level.
- Super Builder (20 points): Build 50 LEGO build-its.
- Nice Outfit! (20 points): Collect all suits.
- Dressed to Impress (20 points): Get all suit upgrades.
- The Richest Man in Gotham (40 points): Max out the stud counter.
- The Most Dangerous Man on Earth (20 points): Defeat Joker, Two-Face, Riddler and Catwoman as Batman.
- Heads I win, tails you lose (20 points): Defeat 10 goons and 10 police officers with Two-Face in a level.
- Who needs curiosity? (20 points): Defeat Catwoman 9 times.
- Shot to the goon (20 points): Defeat 8 goons in 8 seconds.
- Throwing up (20 points): Throw 50 policemen with superstrength.
- Atomic Backbreaker (20 points): As Bane do the Backbreaker on Batman.
- Oh, I got a live one here! (10 points): Shock 30 people with Joker's hand buzzer.
- Kill-a moth (20 points): Defeat Killer Moth.
- Smash Gordon (20 points): Defeat Commissioner Gordon with Harley Quinn's Hammer.
- Start of something wonderful (15 points): Shock the Joker with the Joker.
- Boy Wonder (10 points): Perform 20 backflips in a row with Robin.
- Thanks a million (30 points): Complete Arkham Bonus level.
- Is it a bird? Is it a plane? (10 points): Glide for 9 seconds.
- Gentlemen, start your screaming (15 points): Knock 5 people into the ground with a vehicle at once.
- Natural Habitat (10 points): Smash all street lights in Episode 1 Chapter 1.
- Make it snappy (20 points): Build the Croc ride on.
- The Destroyer of Worlds (15 points): Destroy 12 objects at once with Bat Bombs.
- There and back (10 points): Destroy 10 objects in one Batarang throw.
- Kiss from a Rose (15 points): Eat 15 enemies with the Venus ride on.
- Ice to see you (15 points): Freeze 50 enemies as Mr. Freeze.
- Say hello to my little friends (15 points): Destroy 20 policemen with penguin bombers.
- Scare Tactics (10 points): Scare 5 enemies with Scarecrow.
- Down the rabbit hole (20 points): Use Mad Hatter's mind control to walk 5 enemies to their deaths.
- Eat floor... High fiber (15 points): Slam 20 goons into the floor with Batman.
- Super Hero (25 points): Complete the second episode - Hero.
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