A lot of the work used in Quiver is original Valve content. Development seen on the Moddb does not necessarily represent the current/finalized progress of Quiver.
Gentlemen, the test chamber as seen from the alpha version of the chapter 'The Portal Device.' On the left, in the red light, is where the player originally met their first zombie as it fought with a security guard. In the control room upstairs is where you'll find marines bullying scientists.