If you want to get all medal types at once, then go into single player mode and select training. When in training do all of the objectives until you can play as Mace Windu(Where you have to destroy 18 droids)don't kill any droids, instead die, then since at this point you have all of the needed people select the 1st person you want to get the medal for and get it, then switch etc. as long as you don't die when you have all of the medals when you finish training you will get them.P.S. don't get in a spider droid and try to go to the your side of the battlefield or you will some how die instantly.