FF Game Performace

Well Game Performance in general, their was a link on the Halopedia that broke down what each stat did but I can’t find it. Anyone have the link or know what affects the “Game Performance” stat on the score screen

I know Completion is waves, commendations are self explanatory but Game Performance is a mystery, it seems no mater how “good” I do [Be it a perfect game of FF with no deaths, or when I die 20 times I always seem to get the same amount of credits]

Game complete is always based on how long the game lasts. The longer the game the more cR you get for game complete.