Yes you have to get the ex without dying. Thats why its called "The Surviver title."
You get the title Survierwhen you get 140,600 ex without dying.
You get the title IndomitableSurvier when you get 587,500 ex without dying.
You get the tttle LegendarySurvier when you get 1,337,500 ex witout dying.
If you reach the title of Survivor (i.e you don't die), but you die after that, do you still get to keep the original Survivor title, even if you can't go on to get the Indomitable Survivor title, or does the act of dying REVOKE your already obtained title?