Thank you so much for checking the game out! The invisible walls are actually intended. To finish the puzzle, you need to push the box in through the bottom-left opening, and then flash to remove the box when you don't want it pushed
Viewing post in The Darkness Remembers jam comments
Ohhh I see now. That is actually a really cool level. I was able to go back and beat it. Maybe something visual telling the player that the invisible walls are intended or making the box already spawn in the opening so the player would have to push it into the bat could help that level. I really wish this was longer because it is so good. Great job! Good luck with the ratings!