Believe it or not, Halloween is the most popular day of the year for date-specific achievements -- it even beats Christmas. A massive five games make use of October 31st to get people to make progress towards or to unlock six achievements between them. If playing games seems like a much better idea than trick or treating, perhaps consider putting in one of the following titles. https://www.trueachievements.com/customimages/042284.jpg First, you'll want to head into Batman: Arkham City to pay another visit to Calendar Man. Calendar Man can be found in the basement of the Solomon Wayne Courthouse. You gain access to the Courthouse near the beginning of the game. If you visit him, he'll tell you a story and you can cross off another of those 12 murderous dates needed for the following achievement: Storyteller in Batman: Arkham City Storyteller in Batman: Arkham City (Xbox 360) Storyteller in Batman: Arkham City (GFWL) The next two achievements are from Halo: The Master Chief Collection. By entering Halo 3's Valhalla map in Forge mode, in a custom game or in multiplayer matchmaking, you can view a gravestone sigil and you can cross off one of the two different sigils needed for the following achievement: Elder Signs in Halo: The Master Chief Collection Elder Signs in Halo: The Master Chief Collection (CN) If you then load up the Zanzibar map in Halo 2 in Forge mode, in a custom game or in multiplayer matchmaking, you can take a look at the sign on the beach for a special Halloween message. As you only need to view a single seasonal sign, you'll unlock the following achievement immediately: Destination Vacation in Halo: The Master Chief Collection Destination Vacation in Halo: The Master Chief Collection (CN) Heart&Slash is the next title on the list. You need to start a game to unlock the following achievement. A bonus is you'll unlock the game's Heart-o-ween character too. When playing as this character, the levels are much darker and are only illuminated by a heart-shaped light from his Halloween pumpkin head. CREATURE OF THE NIGHT? in Heart&Slash The next game is the least surprising of the bunch. All players need to do in Saw 2: Flesh & Blood is to press the Start button once they reach the game's main menu. Doing so will get the following achievement: It must be SAW in Saw 2: Flesh & Blood The final achievement is probably the most important of the lot, because it's the first opportunity since the game's release that players will get to unlock it. If players start up a game in It's Quiz Time, they'll finally be able to unlock the following achievement: I ain't afraid of no ghost! in It's Quiz Time There will be more opportunities throughout November to unlock date-specific achievements. We'll be sure to remind you about those nearer the time. You can either keep your eyes peeled to TA's front page for those articles, or subscribe to the Achievement Reminders news category to receive PMs or e-mails every time we remind you about those achievements.