This is what I call luck. Also, sorry for the discord notification I'll make sure to mute it next time to prevent these inconveniences.
What I did at the start is what I like to call "fast DH start." Lame but it's simple, right? It's just that you can dash with D-Horse as soon as you hop on him. It goes like this W + E (mashing like crazy) + Shift (mashing like crazy). It's kinda hard to do it, so I consider myself lucky that it actually happened.
This run is almost perfect, if I had exit the FWD just a bit later a different animation would play and save a fell milliseconds. Nevertheless my route was superb, dodging every rock and slight bump so D-Horse wouldn't jump around and lose precious time.
Had to be really quick cuss the tank could take down the chopper at any minute. The ending was really sick. I managed to park the FWD in such a way that it blocked the tank's shots. And for some divine intervention I actually managed to finish the mission.
Time is based of the IGT.