On a routine trip returning The Joker to Arkham Asylum, the Batman himself must deal with traps set within its inner sanctums, purposely set by the now escaped Joker, along with the rest of his rogues' gallery that are now free within the premises. Written by
Welcome to the madhouse
Did You Know?
Even though this is an open world "sandbox"- type game, limited to Arkham island, at no point does Batman take a rest from his detective work. The game saves every time the player enters a new area on the island. See more
At the beginning Harley Quinn set charges to an elevator and causes it to crash down while being pulled up by the counter weight.
If the elevator cables were cut (as they clearly were) the elevator comes down, but so should also the counter weight. See more
All units proceed to Gotham City Hall. The Joker has been apprehended. Batman is now en route to Arkham Island.
References Batman Beyond