After a few days, I recieved a standard form reply to my original E-Mail:
From: Griphin [mailto: *****]
Sent: Tuesday, June 07, 2011 3:48 PM
To: Showcase Viewer Relations
Subject: Endgame cancelled?!?
Sad you’re cancelling this show, something original and exciting to watch every week, shame on you people!!!
And Showcase's form reply...
Thank you for contacting Showcase. As you know, we have decided not to renew the series Endgame for a second season. This was a very challenging decision for us, but while we are very proud of the series, for a number of reasons, including audience numbers, we have decided to put our efforts behind other returning series and commissioning new and exciting projects which will be announced in the coming weeks. We appreciate the enthusiasm that the Endgame audience is demonstrating and hope that they will continue to support Showcase and its programming.
Showcase Viewer Relations
So unless there's a miracle, I don't know if we'll see a second series. :(