St. Roch's Day is nearly upon us and with it comes the chance to have another chat with Calender Man. Make sure to pay him a visit tomorrow in Batman: Arkham City (Xbox 360)
to mark off another date towards the following achievement:
If you own a disc-based version of Batman: Arkham City (PC)
which can still be used through Games For Windows LIVE service then you can also do the same for the equivalent achievement on PC.
Make sure not to forget about this one, which is certainly one of the more obscure holidays that Arkham City
uses for the achievement.