From my personal experience and anecdotes I’ve read it appears that the number of Tomb Flakes awarded in any given CoE run is highly influenced by maintaining high Favor through completing Side Objectives and avoiding Punishment for failure to do so. Having run CoE four times (each in random matchmade lobbies) while completing the majority of Side Objectives and never once receiving Punishment, I have received between 8 and 10 Tomb Flakes per completion. When a Side Objective is announced make sure to prioritize it over everything else; stop attacking the arena Boss and only take out adds as necessary to make sure you get it done. When a Traversal section provides a Side Objective, do it. While you have to contend with counting timers for each Side Objective, there is no time limit for any encounter; the only thing that creates a true [b]Failure State[/b] is running out of revives and being kicked to orbit. So generally take your time and play it safe (be sure to take out Model Prisoners when you see them to gain extra revives), then go all out whenever a Side Objective pops up. (΄◉◞౪◟◉｀)