Downloaded this over Steam for the PC to give it a go (since I've pre-ordered the game
Before I start, let me say that if you are expecting DS I or II with upgraded graphics then you are going to be dissapointed. DS III is basically a seperate game with seemingly little to do with previous versions of the game.
The controls are not that great. It's pretty clear the game is written primarily for console and it shows. For a keyboard/mouse user I found the direction/camera controls confusing. The UI is also very much in the console space with each inventory, skills, etc page taking up the entire screen. While I did find swicthing between them easy enough, the fact that you couldn't have them all open at once is pure console.
For the most part, this is the only real complaint I have about the demo. Everything else went pretty smoothly. The graphics are good as is the game play. While the automatic targetting can be a little frustrating at times, it's also workable. Once I got used to how the game functioned the game was fun to play and will be quite fast paced.
Overall I like what I've seen and I'll be keeping my pre-order
The game is scheduled to be released on the 18th June (according to Steam).