This was a short running away from monster experience. The ending was definitely an unexpected twist and the surroundings of hospital were quite scary as well due to the usage of lighting around the hospital. I assume that you used some free assets to make the game as I have seen games using the same assets (I have seen the monster 3 times).
if the creator is aiming to create an amazing horror game involving running away from people who have gone mad or mutated, the creator can consider playing The Outlast franchise to get more ideas and inspiration on making an amazing horror game.
Thank you for reading my comment and I wish you good luck in your future endeavours.