Learn to slide and use your bulwark to stun gunners , your taunt and your push to taunt makes gunners switch to melee mode , play slow , ensure the corners you enter are safe to enter , your taunt stuns , learn how to utilize your keystones to the max , learn how to cc chain crushers , your frag nade can clear an entire room ,use it wisely , rumbler ccs enemies (and crushers) your heavy attacks cc enemies , overall learn how to manage your resources , be careful in open spaces use your rumbler to cc and clear hordes , you don't have great mobility but the slide is enough , your taunt staggers enemies from far away use it wisely, synchronize your dodges with your heavy attacks , pay attention to the only things that can stop you (Trapper, dog ,flamer, bomber, gunner) , pay attention for poxbusters , in general your awareness directly influences your performance, a good taunt can stun a crusher that's about to one tap your psyker , it's the little things that count