Multiplayer hoarde mode for a company that makes multiplayer games for breakfast, well if they are struggling to show that off well, then it doesn't bode well for the game at all.
Let's be honest companies don't go to these shows to show off a crappy game, they make sure they show off the best part of the game, so it having so many issues in such a basic game mode, that's worrying.
They still have about 6 weeks dev time and then a few more weeks if they do a day 1 patch, so they still have some time left to fix things, but I wouldn't worry too much about some of the glitches, they can be fixed, i would be more worried about clunky and uninspired fighting mechanics. Those are the things that cannot be easily changed at this late a stage.
Making an indie game : Dead of Day!
