Levi Ackerman is a man of few words, but when he does speak he usually gets right to the point. He is the type of person who would describe himself as "a soldier doing his duty" or "a soldier fighting for his comrades." He is a pragmatic and efficient individual who doesn't have a lot of time for self-reflection or contemplation. But when he does take time to think about himself, I imagine he would see himself as a survivor who has been through a lot, but who continues to fight on regardless.