itch.io

Project is very much alive

His twitter is here, where he posts periodic updates

https://twitter.com/rb_dev2?lang=en

Major progress update is also on the kickstarter, dated Feb 3 :)

https://www.kickstarter.com/projects/rb-d2/project-wingman/posts/2392440

Not just yet, dev has said that final release will have it

There's some footage to VR in the developer's twitter, here's one

https://twitter.com/RB_Dev2/status/1084786620438474752

Open the downloaded game folder

Navigate to Engine\Extras\Redist\en-us

Then install the UE4Prereq setup

I had the same problem as you