Unlocking Wayne Manor
Wayne Manor is a secret level that can only be accessed by heroes like Batman and Robin. To unlock Wayne Manor you must complete each of the 15 hero missions and achieve a Super Hero rating on each. To reach the Super Hero rating you must collect a certain amount of studs, with a greater value needed for each level. This can be accomplished by any hero character. Wayne Manor is accessible from the door in the hero's trophy room once the level has been unlocked.
Playing Wayne Manor
The Wayne Manor bonus level has only one goal, to collect 1 million studs. Wayne Manor contains only purple studs, which are worth 10,000, and the level has exactly 100, so you must collect each one to finish the level. Purple studs are found inside Wayne Manor itself and around the grounds. Destroy objects and build items with LEGOs to find them all. Wayne Manor has an additional bonus stage. Find all of the computer parts in the garbage cans in the garage to build a computer. Have Robin use the computer and play a side-scrolling computer game to find more purple studs.
Unlocking Arkham Asylum
Arkham Asylum can only be accessed by villains like the Joker and Two-Face. Similar to Wayne Manor, Arkham Asylum is unlocked after you complete all 15 villain levels with a Super Villain rating. However, villain levels are opened up only after you beat the corresponding hero level, so you will have to complete each hero level at least once, with any rating. Arkham Asylum is accessed from the vent inside the villains' trophy room once unlocked.
Playing Arkham Asylum
The goal of the Arkham Asylum level is the same as for Wayne Manor, to collect 1 million studs. However, unlike the Wayne Manor level, there are more studs than necessary to complete the mission. The Arkham Asylum level has dangerous obstacles, like Freeze Girls hiding in the hedge maze, that can kill you before you have a chance to collect all the studs. Explore the interior and grounds to find breakable items where studs may be hiding.