Arenas is a fan-made series of CGI episodes related to the Doom and Quake series, and Season 2 was in production up until the 18th of November when Joe Goss posted this on the official website @ http://www.quake-rebellion.com/ :

[...] Unfortunately, the budget could not be realized, and we've had to close down work on Season 2 indefinitely. We're still very proud to have Season 1 complete, and hope the fans look at our project as complete over time. Thanks to everyone, we're still around. We'll still be making some shorts for the channel, but don't look forward to Season 2.

:(