Batman: Arkham City is one of the most feature-packed titles of the year. It takes some digging to experience everything the game has to offer, so if you need some help finding some of the game’s more obscure secrets, check out our list of Batman: Arkham City’s Easter eggs.

WARNING: If you clicked on this link thinking that it wouldn’t be filled with spoilers, you may need to reexamine how you make logical decisions.

Does the Joker watch Lost? Because we’re pretty sure he’s talking about the confusing TV series here at the 54 second mark.

Have you found Killer Croc in the sewers? Note: This can only be done after you defeat Ra's al Ghul but before you leave the subway tunnels.

Deadshot is an experienced killer. Can you find all his victims and then track him down?

[Next up: Scarecrow, Mr. & Mrs. Wayne, and Azreal]