All we know so far is that we can see it. No one has found anything substantial toward obtaining it, and there is no proof it is a tease. There could very well be a secret door to get there. Just like the bank vault in GR. Lots to explore. Be patient. You will see it in all caps when Syndicate or someone on YT finds it then everyone reposts it as their own LOL
Has anyone tried using the trample steam? It flings you(and zombies) across the map, could possibly be a way to obtaining PHD.
btw; the trample steam is a buildable, below the room where the PDW is, you collect the parts in the first spawn.
How about someone in one game open all the known doors on the map and then go theatre to explore the map better.
Also, didn't I hear that the buildables can be combined or something?
What I think is that you can't get to PHD. Only way to get it is to be lucky with the free perks from the "Nova Jumpers"
I think the sliquifyer is used like the speed gel in portal 2 combine the fly trap flinger thing and slide into it in the right spot and maybe...