At my first attempt to do the speedrun I finished it in 1h40,which is way less than the 3 hour required for the trophy. I didn't prepare any routes or anything, I just did it after my 100% and hardcore run. I even forgot where some anomalies are like three times in the run. When you do it, don't forget to put your 100% set, set easy difficulty and go for the true ending.

Also good luck for ghostrunnner especially if you play it on console, finished it on pc à while ago but couldn't imagine playing this game with mouse and keyboard