Doo-la-da-doo-la-la-laaa. Brilliant.

The challenge room map pack is set to include missions inside Penguin's Ice Lounge and Joker’s Carnival, as well as the aforementioned Batcave. Details are scarce, but we do know that the pack is due for release on December 20th, making it the perfect antidote for those office party blues. Expect it to be priced similarly to previous Arkham City map-packs, at around £5.

[source thesixthaxis.com]