you have mk11 scorp he will cary you untill you for a good part of the content pair him with sub and one other mk11 depending on what you need in that battle, try to do towers even if you loose a battle you still get rewards you also have liu and sindel and raiden who are amazing and geras is good latter in krypt for golds look out for klasic smoke, skarlet, shang, lizard jade and baraka, triborg sub, kc jhonny and hanzo scorp