Yaroslav's look is inspired by Leon S. Kennedy from Resident Evil 4.
Ben's look is inspired by Liam O'Neal from The Evil Within 2.
The surname "Baker" of the serial killer character is a tribute to Jack Baker from Resident Evil 7.
The Farmer growing mushrooms inside corpses is an homage to the TV show Hannibal.
The leader of the mercenaries squad is played by Claudio Ravinale, the frontman of the heavy metal band Disarmonia Mundi.