Your probably fine to skip to gen part 2, since it’s much easier than gen part 1. All you need to know for the story is that you were in a simulation, you got out of the simulation, and gen 2 continues off the ending off gen 1, but your character wakes up during the gen 2 starting cutscene, and spoils not too much (almost nothing) from the gen 2 ending.

-Lamprey