continuing opening when opponent doesnt follow?

I'd be careful about calling FCO updated. For example, people in the know know (where did I learn English?) that Morozevich introduced the ...Nge7 plan for black in the Albin Countergambit around 2005. Yet there is no mention of it in FCO, even though it was a major contribution to the Albin theory.

[Disclaimer: I do not employ the Albin on regular basis.]

there is this guy wu plays e4-b3-Nc3-Nf3-Bb2-Bd3-Qe2-000-h3-g4,

regardless of how black develops Sicilian Caro-french-petrov-pirc-A00 to him those moves up thr will be played No matter what you play. but will be calculating as well,

its not that playing a particular opening theory,

i think the question wants to know how you attack/defend someone who does not play opening theory moves, but playes their own stuff in their head, but make a mistake you loose,

and NB, these guys after setting up their positions wont play partzer moves, but will come in with aggression and tempered moves

If you want to improve, you should study endings and tactics. Your opening study should focus more on principles than on specific lines.

2013, seems like yesterday!

Has bjapan96 been here since 2013?

Yes. The OP was last seen on the site six months ago.