It's less a plan and more of a life philosophy, really.
And sort of, if the Illuminati were a pile of cogs and wires and random radio noise and code and churning motors scattered across multiple levels of reality and all over the world.>a large number of weak enemies
I wouldn't exactly call angels WEAK, just...not worth hiding from, but they ARE spirits and can absolutely fuck you up if they take you off guard.
If. The human "disguise" demons were is actually a quantum flux state locking them into the form of an ordinary human and becoming the biomechanical eldritch true form takes a modicum of effort. Angels can absolutely fuck you up if you're caught with your pants down.>flawed
"Nuumina" is the nWOD word for spirit abilities in general not an energy source, and demons don't run on it. They run on Aether, which is a waste product produced by the GM's infrastructure. Yes, this does in fact mean demons are ultimately dependant on their creator's poop to keep using their superpowers.
They're very broad and customisable and can be stuff like Control (Pigeons) which is supernatural, at higher ranks conceptual pigeonbending. By comparison Embeds and Exploits are more like finding loopholes in the world to walk through after it's rejected you; they're also usually much more situational, though massively effective in their speciality.
As for flawed-so there's this mode called Going Loud, where a demon gains ALL Embeds and all Exploits for it's "class". This is fluffed as representing the demon tapping into it's pre-fall state of being to hijack metaphysical backends. It isn't clear how much of it is MEANT to represent accurate what they were like pre fall, and how much is them supercharging their newfound applied metaphysics rules lawyering.
I mean, look at this shit. This is supposed to be a reasonably formidable guard angel. It's Lunars all over again, they're SUPPOSED to be imposing harbingers of paranoia but the mechanics aren't their friend.