The piece itself cannot directly acknowledge that it is in fact Halloween, but it must be blindingly obvious based on the setting and storybuilding.
The piece must start on Halloween and end during All Saints' Day sunrise.
Your tale must include Halloween with an SCP Backdrop or the SCP Foundation with a Halloween backdrop.
I felt like I was cutting it close with requirements on this, but here it is. This is goofier than anything I've done in a while, and that was hard to balance with the serious elements. I ended up cutting out a significant amount of dialogue between Trauss and 5527. Thank you to Kitsun3 and
Gabriel Jade for feedback.
canon info (spoilers for other stuff from same universe):
Oh, and I'm sure it goes without saying, but I'm trying something new and a little weird with multimedia here. Images are of me/my car and edited by me. They are CC-by-SA-3.0. Edit: There are now four of these GIFs total, and thank you to Kitsun3 for filming the newest one (sitting down at the bar). We're currently in the tail end of Wasabicon — I wish I'd thought to do this last night when all the other cosplayers were still here, because that would have been perfect for the setting… rip