2nd Nightmare run.
Made it to 19 without dying (which beats my first-time record of 3.1

).
Made it to 76 (first-time record was 70).
Scored 1.39 (first-time record was 1.23).
It's not great, but at least it's progress.
I saw this:
Cleared PD0 for the first time with zero lives to spare!and read this:
Cleared PD0 for the first time with zero lives lost! 
Very different, needless to say ...
I managed to start gaining them back, had a lot of unnecessary deaths, and still made it to 90.O_O At first I thought, that sounds impossible. With a lot of clumsy deaths, you still made it all the way to 90 at such a deficit ? But really, it's the same as reaching 90 with 6 lives, and you've reached it with 8+, so never mind.
I'm morally opposed to Ctrl+Shift+K.Me too ! I've only used it once, and that was only because I thought "save & quit" (as the pause tip puts it) meant "save & quit & come back later." I've been really frustrated at times, but I don't think I could ever bring myself to actually do it. Although I'll probably just end up subconsciously running into enemies if I get sick enough of playing. It has happened before.