Thanks! There was supposed to be an end but we ran out of time, in the game there is a syringe you must find to alter the monsters ability to control you (you keep control during the encounter and you see their true form), this way you'd be able to bypass the exit-door-looking hallucination and find the true exit, however, only the syringe and the immunity feature were implemented, not the exit.
Besides the syringe, you found everything that was to be found.