If you want hosting,
try my script.
As for the actual run, my most significant suggestion is to seriously consider jumping into pits.
Case in point: Magna Centpiede's sub-tank. After grabbing it, you dash right and fall down the hole. You didn't even grapple the wall. The faster solution would like be one of grappling the wall, or doing a dash jump from the sub-tank such that you just barely miss the floor of the ledge falling it. That way you don't need to wait for gravity to accelerate you down the hole -- you've pre-accelerated.
Edit: although you've eliminated the X-Hunters very quickly, I'm wondering if the time saved is worth it. To the best of my knowledge, their locations cannot be manipulated, so you could play through freely and observe their behaviour and decide how you're going to bump them off.
