Context: The speaker and another party that pilot a robot were surrounded by onis. They beat all the onis but another enemy fleet appear. The speaker panic and tell everyone that they ain't going to make it. A guy of the party says he is pessimistic despite his ''great position''.
Then here are the lines follow:
Yes, the subject is あんたら. It's quite obvious since the preceding sentence clearly states that the topic(= what they are talking about) is あんたら, and it still continues to the next sentence because the topic is not changed yet, as in けど、あんたらは俺がいたから残って戦うのを選択したんだ. Makes sense?