This looks like a whole lot of work went into it. I couldn't do very much but walk around fighting... it seems like interactions were broken on some things... they were highlighted but nothing happened when I clicked them. I really think this would make a good full-length game. The major problem I have was controls were a bit annoying. I would have had clicks to interact with something be context sensitive... ie. click on a door, you go through it, click on a workbench, you use it, click on a monster, you attack it with the currently-selected weapon. You could have either right-click switch weapons or have a button on the screen that did it for you... or a number hotkey.
A really nice start to what could be a really great game!