If you feel The Hunt demo performance is not so good, because Stonetrip stupidly turn the graphic quality to unnecessarily highest setting. In the game setting manual, try turn the setting to lower a bit, the setting screen nicely give you a real-time preview, you will found big improvement in performance and almost not obvious graphical difference.

I checked that demo with settings adjusted to my pc, and it run well. but that demo level is nothing special, relatively small area, a lot of waving grass, and only a few obstacles...

Iw opuld like to see lot of little 3DGS games as good and complete as this one

The graphics features are some standard and good ones !
The navMesh system is just great, no more worry about complicated path finding.
Shiva provides lot of simple to use already existing features to make your game.
And i find the scene pretty well done , with a good bunch of assets around the house, and with lot of animated with their AI, this is a complete game running pretty well

They could have put some large bigger terrain with zombies only, but i prefer a small level with lot of details and things and lot of zombies.

You can make a world if you use scetions of levels , like Zelda games indeed
Or you could make some Devil May Cry , Resident Evil game with good detailled scene without worrying.

Indeed it's indie engine and not to remake Skyrim with it, but i find it really great for that price ( All mobile , webplayer and PC publishing and more ...)

I just posted on the tools to says for more 3D artists than programmers: "Wow for that price, and all that mobile platforms !!"

For anyone interested in this engine: It seems Stonetrip is at the crossroads:
http://www.develop-online.net/news/43756/ShiVa-game-engine-maker-Stonetrip-in-liquidation

Actually after what they pulled off in terms of a wall of silence from the developers (even now there afaik isn't a real response on their forums) I hardly think Shiva will go anywhere. They might release what of their years behind schedule 2.0 release is finished but I don't think that'll give them much of a perspective. Sounds like the BeyondVirtual / GameCore story to me only that Stonetrip managed to acutally deliver something usable in the first place...