"They're Alive!" (c) Game Factory Interactive
It is some kind of an FPS slasher made with the ORION engine from Russia (the same as the Stalin Subway series). In my opinion it should be added to the games list.
Release 03/2011.
I wasn't able to find an "official" link to it yet, but you can search for:
https://ssl.scroogle.org/cgi-bin/nbbwss ... e%22+orion