When ulting as Mal'damba be careful of shields and the cart, both of those can stop your ult from being as effective as possible by blocking it from hitting anyone. Try and make your ult detonate above the cart.
Try to avoid Close Quarter Combat with Mal damba since his weapon and cobra stun is effective at close range.and remember,every good Mal damba always throw out atleast 1 ammo for ready stun reload
Don't engage enemy tank, if Mal'damba is near him. While you fighting frontliner Mal'damba have time to aim his Cobra Toss.
Attack Mal'damba if he separated from his teammates. It is difficult to aim "Cobra Toss" while under pressure.
NEVER underestimate a Mal'damba, he is the best dueling suport if the game, even as a flank be wary of his reload, never take on Mal'danba at close range alone, if you can avoid it.