I'm not sure there's a game here. You can hide with S, limited by the grey bar depleting, but as many screens as I passed through, there weren't any changes in the environment or the monsters. I eventually decided to see what happened when the monsters caught me and... nothing happened, except the red bar filling up. I tried hitting other keys, since the description says "figure it out," but none of my keyboard keys seemed to do anything (apart from ASD ofc). Tried clicking on stuff, too, mouse left and right, to no avail.
The monsters are very cool, though, and I like the character's design! Just... wish there were a game to play.