Check your in-game mail for a small set of gifts from Sten MK II.
Text version of the message
Dear Commander,
Happy Halloween! The base is really lively today. Everyone's dressed up in weird outfits and I bet you've already given out lots of candy already, right?
Actually, I wanted to be the first person to get candy from you, but just as I was about to pay you a visit, my bad luck kicked in again... I stepped onto one of Miss Python's traps, Miss P7 almost scared my out of my skin with one of her pranks and I fell flat on my butt... But the moment before I went down, I raised the Jack o'Lantern I was holding with all my might. Thus, it was perfectly intact even though my clothes were all dusty from the fall~ Hehehe, thank heaven for small mercies, I guess.
Now that I think about it, I'm always so clumsy. Not only am I always unlucky, but I don't stand out in any way... Yet even an ordinary Doll like me can enjoy yummy candy with you. So I guess I probably turned all my bad luck into good luck for the rest of the world~
So please, Commander; put candy inside Mr. Jack! If you don't... Hm, well, I'm no good at pranks but I'll take all the tea and snacks for myself!
Sten MK II