The main purpose of this update was to add a wiki style unlockables Compendium. You can access it from the Escape menu and has a bunch of screens for gameplay stats, achievements, rooms, dudes, bosses, weapons and items. There's 5 new achievements too for completing the various Compendium sections.
A new enemy type and challenge room design has also been added for each of the four domains. And there's now a chance a room will contain randomised enemies rather than enemies of the same type, plus a new mutator which increases the chance of randomised enemies.
Enjoy. :]
[img]http://cdn.akamai.steamstatic.com/steamcommunity/public/images/clans/26288166/fb55b0802b8ad3da743d5a07b217a715e8ddffe0.jpg[/img]