Impressive!
I'd really like to see what kind of game you will make with this game. If you ever get enough manpower to make a full-scale RPG with this engine, I'd like to try it. ^_^
(suggestions)
1- A camera rotation feature (make the walls go clear if you can)
2- A running feature for the character
3- Use the directional buttons instead of the mouse
Also there is a glitch. When you have the mouse pointer on the same y-axis value of the character, the man moves left/right, but walks like he's going up.