Matt's joking...
Basically, I throw an n-bomb instead of CMP'ing the 8th and 9th guards. Oh, but I can't switch to CMP fast enough to kill the 10th (last) alarm guard. So I have to n-bomb him too. But that affects the guards in the hallway next to him. I get back to that door at the bottom of the stairs before it closes, thus saving even more time. No n-bombs left for the GPS-stair guards. Those guards affected by the n-bomb end up following you to Elvis, or getting stuck at the red stairs (unlike normal, where they stay in that other hallway out of the way). I think I had a Janus near the red stairs (thank God).
But yeah. More guards alerted = more guards on way back = harder to PR. But you're 3 seconds ahead of normal pace. I doubt this strat should be used on PA, it's certainly not worth it. More guards = death.
The run was a low-mid 34 speech skip, which is gay because I got backboosted on my way back from moonpool. Best I've gotten is a 33 flat skip. 46 xray door (best 45). Good xray but not best. Dunno about 3rd door after xray, looks like 0:58 or 0:59 (best = 0:57). 1:13 door to Elvis. Solid but shaky after that. Very low 1:43 xray pause = very high 1:47.
EDIT: Things that make this harder than the normal strat:
- The first n-bomb can detonate instantly if it rebounds wrongly (about 20% chance), but this is skill more than luck.
- Stucks/backboosts on the way back from moonpool are common, which means you can't make the door before it closes.
- Guards on GPS stairs can't be n-bombed (none left). They're gay.
- Lots more guards to get stuck on when returning from Elvis. Or about 10 guards all having an orgy on the red stairs.
I had no doors open on the return from Elvis on this run, but considering the number of 1:48s I got (7), the high decimal, the time it took and the luck I had with that Janus guard at red stairs, I don't really want to go for lower. I can see this time being untied for a while (watch me get proven wrong).
Also, my first 1:48 was old strat. All other 1:48s were new strat.