I think it will certainly start with Hercules. I don't want to give too much away but I think this is the demo timeline.
1. Hercules - The Nemean Lion
2. Odysseus - Gift to Troy
3. Zeus - Family Reunion
Also, it is a work in progress but I think this is what the HUD will look like so far... Obviously will have some changes, more than likely.
PC Controls can just be a three button mouse and 'W','A','S','D' keys, "esc", 'M' and 'I'. I need to add a button to the right.