Neat concept and decent submission for a first jam.
The bat/demons spawn way too quickly and have too large of a range. You just stand in the hallway and constantly fight them, basically. The combat doesn't seem fluid/controllable enough to deal damage without getting hit. I think this could be fixed by just making the holy water's range a bit better, or leaving a damaging area on the ground afterwards.
It also seems a bit odd to have patients reappearing in beds occasionally, but it is a jam and I get it - you just sort of stick with whatever the first idea is.
Well executed and good idea! Keep up the good work!