Getting mouse sensitivity correct is difficult due to individual windows and mouse DPI configurations for each individual PC. For a jam I wouldn't worry about it too much, for one person it may feel overly `twitchy` in movement speed and too slow for someone else. You could opt for a sensitivity slider if it bothers you but I wouldn't worry too much. The speed of the character could be reduced to a walk and holding shift to run could solve turning corners if falling off the edge is not the intention (or place invisible colliders so the player cannot fall off. The core mechanics of the game are great and you did awesome!