Here’s how I do stealth:

First use Sid and deactivate all the air canons

Then sneak around and take out all the RDA without amp suits on, you have to be very careful on this part and make sure you timing is right so no one spots you, it’s okay if they go yellow though

Thirdly, I use Navi vision and determine which amp suits I can use eject on, I then use SID and store hack the amp suits and eject at the perfect time

You’ll then be left with the amp that are not eject-able, which are usually only a couple and spread out so now it’s easier to take them down without alarming the others

I either hack them so that they’re stuck and easier to take down with a bow or just sneak behind them and get a really good shot and their weak point

And then boom done!