LEGO Batman 2: DC Super Heroes (PC)

CheatingDome.com

Batman: Arkham Asylum reference

When you fight the Prototype LexBot near the end of Level 9, the robot runs into the walls and can be hurt just like Bane and the Titan Thugs in Batman: Arkham Asylum.

Red Brick and Character Codes

Pause the game to bring up the menu, select "Enter Code" and... enter code! Codes can be entered at any time, and are made available immediately. Remember that you only have to enter the codes once per save slot, but you have to re-enable them if you quit/restart.

EffectCode
Attract StudsMNZER6
Beep BeepZHAXFH
Character StudsTPJ37T
Clown Goon9ZZZBP
DisguisesBWQ2MS
Extra Hearts4LGJ7T
Extra Toggle7TXH5K
Fall RescueTPGPG2
Gold Brick FinderMBXW7V
Harley Quinn's MotorbikeC79LVH
LexbotW49CSJ
Mime GoonZQA8MK
Minikit Piece FinderLRJAG8
Peril FinderRYD3SJ
PolicemanV9SAGT
Red Brick Finder5KKQ6G
Regenerate HeartsZXEX5D
Riddler GoonQ285LK
Studs x274EZUT
Super BuildJN2J6V
Two-Face Goon95KPYJ
Vine GrapplesJXN7FJ

Red Brick Minikit finder

In Gotham Park near the park, play the mini-game with the boats. Shoot the subs with your boat to unlock the Red Brick Minikit finder. You can purchase it for 50,000 Studs.

Red Brick X2

Find the Remote Bat Computer near the police station. Turn left, and you will see a mini-game. Play the game, and smash the cars with your hammer car to unlock the Red Brick X2.