I've decided to add more entities to the PERSEPHONE simulation.
The Crawlers:

The Dwellers:

The Guard:

Full Changelog:
Added a headphones disclaimer at the beginning of the game
Added 3 new entities, one of which is only available in Nightmare mode
Graphical improvements and slight gameplay mechanic changes
Added sound effects and improved sound design for menus
Lengthened sprint
Good luck.
-Kyvati Studios