Good solid entry to the Jam this one...
I can see a lot has gone into this, so kudos for that!
I was a little confused what was going on at first, but after a few play throughs I got the idea. I didn't think I could attack the guys as I had no weapon, but it seems you can melee them - and there's this 3rd person mode to special attacks.
I found the light shards from the windows had collision on them, so it was annoying that I couldn't run through the light, so I got stuck on them sometimes.
I killed all the enemies, but it seemed like there was no results or conclusion. I tried going out of one of the doors, but they didn't open, so I'm guessing there's no end to it unless you die.
All in all, great job! Lots of effort certainly went into that and it's a good solid game. Loved the bats flying around too, nice touch!