When you are at the the jedi academy go to the bit where you see jedis fighting, put on the noclip cheat and go to the floor. Now you can fight the jedi.they do not die but is fun all the same. You can also go to the other training areas and do the same, at the bit where the mane is fighting the seeker drone go to him hit him with your lightsaber a few times and he will fight back. If you go the final training area and you can kill the jedis pushing the stones.