I'm sorry to hear that the monster part was a bit underwhelming. In all honesty that part was more rushed than the other parts, and since this was my first 'real' game I still was sorting everything out. In the future I'll make sure to put more feedback for the player's actions and test out the AI a bit more. By the way, there is a door which opens to the exit once you turn the valve. Thanks for the feedback and thanks for taking the time to play it!