What are the currently estimated system requirements?

I understand the game is still Pre-Alpha and I doubt it will take much oomph but I'm still curious. I also understand that anything said here will likely change but it'd be nice to know regardless.

Will there be options for Display Control (beyond graphics settings)? Specifically:

- Full-screen
- Windowed
- Full-screen Windowed (especially this)

Will this game be available through Steam distribution at any point?

Will there be two-factor authentication? (please yes, for peace of mind)

Will there be web-based profiles? (i.e. viewing stats and tradeable cards of a player, etc.)

Feel free to add questions. =^_^=