With or without half your engine blades missing?
makes a helluv a difference what blades are missing.
assuming that the hydraulics run off the N2 then you pretty much don't care what's going on in the N1 subject to the following.
The N2 is actually a drag condition when windmilling with all the compressor blades and needs it's turbine to actually windmill as intended. Of course it helps to have air get to the N2 so that's another side of the story.
Now if you actually want to produce thrust you do need another set of circumstances balanced in the equations.(like balanced pressures between the N1 and N2)