I might be wrong here but i don't think we saw Amanda, Rose, or Lamar actually die. Mathias was a zombie, and Cyrus got axed in the back i think. Lamar was brought to the ground but we never saw him actually die. and i don't even recall Amanda or Rose in the scene. I assume they are dead as i don't think they escaped and they're minor characters but maybe they should be unknown? idk.