I like the atmosphere graphics and sounds.. good Job.
It should run faster when the you see the monster.. Also when you died the game doesn't work .(There is no mouse, I have to close an restart the game)...  

This is a neat horror experience using sewers as a unique setting to have spooky goings-on. I think the sound design is on-point here and the use of differing levels to add layers of challenge is also a useful feature for replayability. I think that starting out with 3D development you've collaborated to make something pretty solid. If you were to continue working on this, I'd recommend having a clearer overarching goal, and also a more chilling encounter jumpscare with the monster. But good work! 

Thanks for submitting Don't Go Down Into The Sewer to the SCREAM LITE jam!