Hey, sorry for a bit of a late response, i suppose i should have made a more proper tutorial or an explanation for the game mechanics.
The enemies are supposed to be completely invisible to the player as the gimmick of the game is that you are in complete darkness. The hard mode is the initial difficulty i had in mind, while the easy mode is a quick material swap to help people familiarize with the maze layout and how the game sort of works.
To actually see the enemies you are supposed to use the lidar scanner in the 3rd inventory slot to create small light particles that would be covered if an enemy stands in front of them.
It would probably have turned out better if I had given the enemies more SFX and highlighted them for a moment if they hurt a player to give them time to react where they took damage from, but thats hindsight at this point.