Thanks for your comment. First I went with a system that tilts the cube/die cleanly over an edge, but the physics/torque impulse thing somehow felt better, though ist hard to master. I think the movement would work better on a mobile device, if it was done by swiping. Then the force would by determined by swipe length or speed. It definately makes sense to time your powerful jumps/rolls to dodge the projectiles of the enemies.