I love the campaign mode! I'm almost done with it too after only a couple of days. The one thing that irks me though is this: Whenever I get disconnected in the middle of combat (can be any reason from WiFi router suddenly going on the fritz or a lousy WiFi spot in the office), I end up having to reload the browser and returning to the adventure screen with another loss on my tally. It's not really a big deal, but it can get really really table-flipping annoying when I'm on a tough mission/quest and barely hanging on for the win with my last character. Suggestion is simple: can't the game 'save state' when this happens? Quick reload of the browser and voila, I'm back in combat about to make my moves. Instead of having to suck up and take the loss, can't the game revert me right to the point where I got disconnected?
The devs have said that game state saving is already on their wish list. They just didn't have time to get it done during the beta.