The "Generator Room" . Witch is my term for the area where Flyman is found. You will have to be careful thought, as the area itself has a ambush gaurd that'll try to gut you right off the bat.

Allthought i feel like you'll know when it happens, just in case, this door
right here is the area right before the Genorator Room, so be ready to parry
as soon as you hit E.

After a succsesfull parry, carefully make a run to the right, to where you
should see this generator, and graffiti. This is the area we need to jump up,
with the assistance of our hopefully still alive gaurd.
He'll be stuck to the purgatory that is that tiny ledge, so as long as you keep
away from the end of the sword, you'll be safe. Next up what we need to do is
preform Sayaria's Midair Strong Kick, by of coarse, just right clicking close to his head whilst midair.
This bounces you off him, after witch you double jump of the generator wall.
This Flyman Jump should smack you right up to Flyman, at expense of some head trauma to the gaurd. (This happened to quickly for me to get a picture, apologies)
After witch you should be able to just bool around with Flyman for as long as
you like, and fall off the level too if that's your style. Other than that, that's all thats really to be said! If you accidnetally kill
your liveing jump boost, there's a pack of 3 scondrals below the railing of the 1st area to toss yourself on to quickly reset
Other than that enjoy! I hope you found something usefull or intresting about
this guide, and i hope you have a good day!