Oh the concept's really cool! In its current state I think it's difficult to control, the primary culprit being the dual controls with keyboard and mouse giving different information (you can move in a direction and dash in another, you have to always readjust the mouse depending on where the orca is)
I think a simpler control scheme would either be to only use the mouse, the orca moving automatically towards the mouse and dashing with left mouse button. Or with WASD and Space to dash