I deliberately made it so that the enemy could be where you are. Just by understanding how the game works, you can complete it in less than 5 minutes, and it also plays into the fear factor. But it's also quite easy to run away from him in the game - we run to increase the distance, further into the ventilation from where we climb wherever we want, and during this time he will most likely lose us. But still, I accept the balance problem. Indeed, for me, as a developer who understands all the mechanics, everything can be quite simple.
I'll try to deal with this problem better next time. But in this game, I still don't want to change anything, I'll just try to describe the antagonists behavior in detail.
Thanks for the game and for the feedback.