All I can say is Don't worry! The marauder class is HARD to play compared to the other classes at 50 and it's not the typical 3 buttonmashing type of class that u see in mmo's. And Carnage is good. You want to make sure that you leap in, pop some cds (if necessary) like gore. THen just beat on the target, After u use gore, I tend to use ravage = MASSIVE damage, then wait for the blood frenzy and use the force scream, If u get that in with the gore aswell, U will crit for ALOT! Im not even 50 yet but I hope it helps anyway, Oh and also, replace massacre with vicious slash, massacre is alot better. Good luck out there!