All hail Greg!
Relevant section of transcript from video:
08:41 - [snip] so we released the first alpha on the
08:44 - 15th or December 2013 and the reception
08:49 - could have been better people really
08:51 - positive and excited about playing game
08:52 - and we were excited we're very proud of
08:54 - what we made to be honest but it's
08:55 - amazing one of the the clarion calls
08:58 - wouldn't this be wonderful and oculus
08:59 - rift because DK one was around a lot of
09:02 - our team had bought it personally so
09:04 - they can play around with their two home
09:05 - we had a few in the office and we be
09:09 - honest going to really resist one of the
09:11 - engineers are persuading me that
a guy
09:14 -
called Greg that he reckoned he could do
09:17 - it within he's initially said 24 hours
09:19 - and he said oh well three days or two
09:21 - but actually
within a day he had managed
09:24 -
to get it working on oculus rift it was
09:26 - just such a magical experience we
09:28 - thought we'd go for it and then so on
09:29 - twentieth of december we ship the game
09:31 - with oculus rift support for christmas
09:33 - so all the backers were amazed because
09:35 - they weren't expecting when we hadn't
09:37 - been expecting it ever [snip]
Source: https://youtu.be/vN2BWY872M8?list=PL3Ym79LECwSIkd3OyJEpy_9PwQEuHew2b&t=521