Hey, everyone,
If you've opted into the beta (which you can still do by right clicking on the game in Steam), then you'll see the near-final form of the campaign, plus some other goodies like a "Random Rotation" mode that chooses random game type, arena, and mutators for each match. There's also a secret mode hidden in the game :)
The campaign includes a couple of new game modes--Gatekeeper and Stalwart that pit you against waves of enemies. In Gatekeeper, enemies don't attack you but try to go for exit tears. You must let no more than 3 escape in any wave. Stalwart sees your face off against waves or enemies that are coming for you. When any enemy kills you even once, his/her tear opens. You can't let even a single enemy escape.
That's it for now. Enjoy!
-Dan