Well, I did not see the sensitivity controll at first, but
nevertheless I find it harder to play, than it should be. Especially in the
beginning of the game, the sheep should react with less velocity.
(weniger trägheit). This could be increased in the later levels.

Also I would rather play the game with a camera, that turns with the sheeps
head direction. This camera could turn (with some friction / träge) with the
direction the sheep looks. Currently the controlls are somehow shifted 45 degrees,
since the view is turned by 45 degrees, moving "up" moves the sheep halve up / halve right.
With a camera turing with it, this bahaviour could be changed, so that you have
buttons for moving forward/back, and turning.