Thank you for your great feedback! It appears that the subtitles were not showing up/enabled when you played through, hence the difficulty in distinguishing which voice belonged to Karen, and which belonged to Lisa. We will most likely be adding other ways for the player to tell the difference before the final release. The demo also appears to have some issues with the Shadow Quality option making the game a lot darker when it is lowered, so apologies for the frustration this caused in the dark sections of the game. Thank you once again for the feedback, and we're glad you enjoyed our demo!