The skeleton fights look fantastic, particularly the re-animation.
http://www.youtube.com/watch?feature=player_detailpage&v=WqaRqih7Cuw#t=143s
I was suddenly left thinking how much I could handle playing Pool of Radiance's Sokol Keep again in the Sui Generis engine. The ground textures look amazing as well.
I've never liked Diablo games though, I think the waving the heavy sword about could quickly get boring. And the blasts of spellpower from the armoured knight don't improve it any, but I'm sure the younguns will love it. It's a pity the physics combat isn't party turn based, as I would love to sit with a furrowed brow and the concentration of chess grandmaster taking a dump whilst giving orders to my adventurers, and see crossbow bolts, fireballs and shock waves knock my minions about. Still, pretty exciting software, happy it got funded.
If I could give any constructive feedback it would be for the NPCs/monsters to do vicious strikes at PCs who have fallen/tripped/slipped over... and vice versa. The combat is still a little bland, it looks a little like a pillow fight on a gymnastics beam.* The characters belt each other sideways until one falls over. It would be markedly improved if the characters could do a x3 damage double handed swing or kicks on a prone figure. Dishonorable combat is both fun and strategic.