Lugaru Level 01
Take a single jump towards the rabbit nearest you, land directly behind him and spinecrush. Turn and begin bunnyhopping towards the black rabbit, making sure to attract the attention of the third one approaching you. Before you alert the black rabbit and before the white one reaches you, crouch and roll and come up behind the black rabbit: Spinecrush. By this time, the final white rabbit should have reached you. Kill him however you wish (you may find it useful to throw the corpse of the black rabbit at him).
Optimal Time: 10 Seconds?