A) for moving in this game you actually can use WASD and mouse! I think it was one of the first game hat actually use this configuration. To jump you use J. I think that most of the keyboard is used for this title but you can learn it really fast. To fight and compose spells you are using mouse.

B) this game has two difficulty levels – Standard and Easy. Still the most difficult think in here is to figure out where to go. Well there are plenty of pretty good walktroughs out there so I say give it a try – this game is legendary and even now it looks cool :)