Really cool concept and very solid constructed game, but, gotta say the controls are kind of a mess, I still managed to have some fun, and that means that despite it's obvious flaws (Only the controls really, everything else is great!) this game is really good.
My suggestion for the controllers would be the classic:
-WASD to move, 8-way movement will never be comfortable with a keyboard 8(
-QERF for interactions
-Make it so SPACE toggles between character and tetris controls so both get controlled with the same keys.
Again, I did enjoy the game but I think it would be more enjoyable with more comfortable controls and maybe a tutorial; Very impressive for just 7 days!