The Wunderwaffe DG-2 is the best weapon you could ever get your hands on in Shi No Numa. However, it’s not that easy to actually obtain.
Samantha’s Sorrow is one of the two Easter egg songs you can unlock in the Shi No Numa map in Call of Duty Vanguard.
The Mercenaries of Fortune update has brought forth the “enhanced” Shi No Numa Zombies map, and with it comes a storyline Easter egg.