So, when you fire up the game, it appears you can move the mouse around and the keyboard controls work (I can press F11 and C for Credits) but I can't seem to actually select anything, nor are there any directions.

It’s hard to understand what the game is like from the store description and videos. Are there weapons/armor with randomized stats? Does the player get to level up? Is there a main story quest? How many monster variants are there? Bosses? Fast travel?