Enigma is a top contender for "Prey on sight."
I've been getting some good work out of a new e3 version I'm running, for what it's worth. Although I've had to have the, "You can break out of order, you just trigger in order," conversation more than once.
As for Apocalypse, as things are now with APEX, I think it has three uses. One, when a corporation gets cute early (asset vomit / "I'm not going to rez central ice because I have better things to do with the money" / remote-ice-advance). Three credits to burn down ice/asset, low chance of being burned. Two, when you're about to lose so why not. Three, when you're damn sure it is vegan and you can't take Ash/Caprice anymore. I really suggest keeping three and keeping it in a starting hand, if feasible. Corporation doesn't fall into it, just face down install and move on.
I think the counters to a murder deck post-apocalypse are so situational and influence heavy that, for the occasional epic jack moment, you are really, really hurting yourself.