Survivor emblem ranking system?

Horrorfan8845

I know you get points for repairing gens, surviving longer, healing/unhooks/protection hits ect as well as chases or avoiding the killer but is there any information that explains in further detail what exactly earns points in the lightbringer and evader categories? For example, does it only count if you finish a gen, or will 70% count towards it? Any help is appreciated, thanks in advance