Well we hit the 4.25m goal (3rd playable character) which is the most I was hoping for. 5m goal was revealed to be a roguelike dungeon mode:
It's currently sitting at just over 4.2m on the kickstarter page with 38 hours left, but apparently they have a good 150k or so from paypal backings too. 5m is still a ways off but successful kickstarters like this do tend to see a pretty big surge in the last couple days, so hopefully it's attainable because a procedurally generated mode could be real fuckin' cool.That’s right: Procedurally generated dungeons. In this mode you’ll face a new castle every time, braving its treacherous (and massive) halls for loot, glory, and the simple, satisfying feeling of going where no Miriam has gone before.
Once you’ve explored its passages and defeated its boss, you’ll get a code that will enable you to share your randomly generated dungeon with a friend. (If you find a particularly hard one, you can even share it with an enemy! IGA isn’t picky.)